Document:

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                       TECHNOLOGY DEVELOPMENT AGREEMENT
                       --------------------------------

     This Technology Development Agreement ("Agreement") is made and entered
into as of March 15, 2000 between America Online, Inc., a Delaware corporation
("AOL"), and PurhasePro.com, Inc. ("Purchase Pro"), a Nevada corporation, with
reference to the following:

     A.   Purchase Pro has developed an e-commerce engine for the creation of
          on-line Marketplaces, and also operates various public and private
          Marketplaces.

     B.   AOL owns, operates and distributes various online services, sites and
          related products.

     C.   AOL and Purchase Pro are concurrently entering into that certain
          Interactive Marketing Agreement ("Interactive Marketing Agreement")
          pursuant to which AOL and Purchase Pro will create, promote and
          distribute the AOL Exchange to enable customers to transact business
          online in a variety of industries and Marketplaces.

     D.   AOL and Purchase Pro are entering into this Agreement to set forth the
          terms on which they shall jointly develop and launch the Platform for
          the AOL Exchange.

     NOW THEREFORE, based upon the foregoing premises, and for good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, AOL
and Purchase Pro hereby agree as follows:

1.  Definitions.
    -----------

     1.1  Certain Terms.  The following terms shall have the following
          -------------
respective meanings for purposes of this Agreement:

          (a)  "AOL Network" has the meaning set forth in the Interactive
               Marketing Agreement.

          (b)  "AOL Private Marketplace Technology" means any and all
               improvements, enhancements or modifications to the AOL Technology
               and new components, modules or functionality that AOL may create,
               develop or license during the Term independently of the joint
               development activities of AOL and Purchase Pro hereunder
               specifically for any private Marketplace or Exchange operated or
               enabled by AOL, or that AOL may otherwise incorporate during the
               Term in any private Marketplace or Exchange operated or enabled
               by AOL, and all related Intellectual Property Rights; provided,
               however, that AOL Private Marketplace Technology shall not
               include any portions of such AOL Private Marketplace Technology
               (and related Intellectual Property Rights) that are also included
               in any public Marketplace operated or enabled by AOL.
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          (c)  "AOL Project Manager" means Gregg Stewart and/or other
               individual(s) designated by AOL in consultation with Purchase Pro
               to serve as AOL's manager of the development activities to be
               jointly undertaken by Purchase Pro and AOL hereunder.

          (d)  "AOL Exchange" means the Exchange to be developed and created by
               AOL and Purchase Pro hereunder and promoted and distributed by
               AOL pursuant to the Interactive Marketing Agreement.

          (e)  "AOL Technology" means Technology now or hereafter owned or
               controlled by AOL that AOL determines in consultation with
               Purchase Pro to use in connection with the Platform and the AOL
               Exchange during the Term, including without limitation AOL's
               Instant Messaging software (commonly known as AIM), AOL Calendar,
               the Netscape browser, AOL Quick Checkout, Shopping Cart, and Web
               Board, and any enhancements, modifications and improvements to
               any of the foregoing developed or created during the Term, and
               all Intellectual Property Rights relating to the foregoing, but
               shall not include the iPlanet Platform Technology, the iPlanet
               Vortex Technology or the Jointly Developed Technology.

          (f)  "Change of Control" has the meaning set forth in the Interactive
               Marketing Agreement.

          (g)  "Exchange" means an on-line aggregation of Marketplaces enabling
               customers to purchase, sell and otherwise procure goods and
               services over the Internet across a multitude of vertical and
               horizontal business markets, industries and segments.

          (h)  "Existing Purchase Pro Platform" means Purchase Pro's currently
               existing technological platform for creating and operating
               Marketplaces and Exchanges.

          (i)  "Hosting" means provision of all required technical hosting
               services and infrastructure for the AOL Exchange, including
               without limitation all telecommunications lines, connectivity,
               hardware, software, and other communications infrastructure
               necessary to meet the traffic demands of the AOL Exchange and to
               comply with the requirements of the Interactive Marketing
               Agreement applicable to such matters.

          (j)  "Intellectual Property Rights" means any and all rights under
               copyright, patent, trademark, trade secret, and all other
               intellectual property laws as may now exist or hereafter come
               into existence throughout the world, and all applications,
               registrations, renewals, divisions and continuations thereof.

          (k)  "Interactive Service" has the meaning set forth in the
               Interactive Marketing Agreement.

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          (l)  "iPlanet" means the contractual alliance between AOL and Sun
               Microsystems, Inc. ("Sun") established pursuant to that certain
               Strategic Development and Marketing Agreement, dated November 23,
               1998, between AOL and Sun.

          (m)  "iPlanet Platform Technology" means those specific iPlanet e-
               commerce applications commonly referred to as ECXpert and
               BuyerXpert and similar Technology developed through iPlanet that
               AOL and Purchase Pro mutually determine to incorporate or include
               in the Platform, all enhancements, modifications and improvements
               to any of the foregoing developed or created through iPlanet as
               to which AOL has the right and ability to grant the licenses set
               forth in Section 7.2 below, and all related Intellectual Property
               Rights, but shall not include the AOL Technology or the iPlanet
               Vortex Technology.

          (n)  "iPlanet Vortex Technology" means the specific iPlanet digital
               marketplace Technology commonly referred to as Vortex or any
               components thereof that AOL and Purchase Pro mutually determine
               to incorporate or include in the Platform and all related
               Intellectual Property Rights, but shall not include the AOL
               Technology, or iPlanet Platform Technology.

          (o)  "Jointly Developed Technology" means all new Technology jointly
               developed or created by AOL and Purchase Pro during the Term
               pursuant to the joint development activities under this
               Agreement, including without limitation (i) any interfaces for
               the AOL Technology, AOL Private Marketplace Technology, Purchase
               Pro Technology, Purchase Pro Private Marketplace Technology,
               iPlanet Platform Technology, iPlanet Vortex Technology and Third
               Party Technology, and (ii) any enhancements, modifications or
               improvements to or derivative works based upon the Existing
               Purchase Pro Platform, Purchase Pro Technology, iPlanet Platform
               Technology, iPlanet Vortex Technology and Third Party Technology
               that are jointly created and developed by AOL and Purchase Pro
               hereunder, and all Intellectual Property Rights relating to the
               foregoing, but shall not include the AOL Technology, AOL Private
               Marketplace Technology, the iPlanet Platform Technology, the
               iPlanet Vortex Technology, Purchase Pro Technology and the
               Purchase Pro Private Marketplace Technology, and all Intellectual
               Property Rights relating to the foregoing.

          (p)  "Marketplace" means a public or private interactive on-line
               network for the purchase, sale and procurement of goods and
               services over the Internet in a specific business market,
               industry or segment, including all related service and content
               offerings.

          (q)  "Operation" means tracking of visitors to the AOL Exchange,
               "tagging" of registered users of the AOL Exchange, identification
               and

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               tracking of transactions and payments subject to the revenue
               provisions of the Interactive Marketing Agreement, billing and
               collection of associated transaction revenues, and generation of
               activity, traffic and payment reports and information and
               ensuring the reliability, availability and scaleability of the
               systems for all of the foregoing in a manner necessary to meet
               the traffic demands of the AOL Exchange and to comply with the
               requirements of the Interactive Marketing Agreement applicable to
               such matters.

          (r)  "Phase I" means the initial phase of development of the Platform
               and the AOL Exchange to be performed jointly by AOL and Purchase
               Pro hereunder, as more fully described in Section 2 below.

          (s)  "Phase I Version" means the version of the Platform and the AOL
               Exchange to be developed and launched jointly by AOL and Purchase
               Pro pursuant to Phase I, as more fully described in Section 2.2
               below.

          (t)  "Phase II" means the second phase of development of the Platform
               and the AOL Exchange to be performed jointly by AOL and Purchase
               Pro hereunder, as more fully described in Section 3 below.

          (u)  "Phase II Version" means the version of the Platform and the AOL
               Exchange to be developed and launched jointly by AOL and Purchase
               Pro pursuant to Phase II, as more fully described in Section 3.2
               below.

          (v)  "Phase III" means the third phase of development of the Platform
               and the AOL Exchange to be performed jointly by AOL and Purchase
               Pro hereunder, as more fully described in Section 4 below.

          (w)  "Phase III Version" means the version of the Platform and the AOL
               Exchange to be jointly developed and launched by AOL and Purchase
               Pro pursuant to Phase III, as more fully described in Section 4.2
               below.

          (x)  "Platform" means the technological platform for the AOL Exchange
               to be jointly developed by AOL and Purchase Pro hereunder
               (including without limitation the Phase I Version, Phase II
               Version, and Phase III Version) incorporating or using some or
               all of the Purchase Pro Technology, Purchase Pro Private
               Marketplace Technology, AOL Technology, AOL Private Marketplace
               Technology, Jointly Developed Technology, iPlanet Platform
               Technology, iPlanet Vortex Technology and Third Party Technology,
               as determined pursuant to the terms and conditions of this
               Agreement.

          (y)  "Purchase Pro Competitor" has the meaning set forth in the
               Interactive Marketing Agreement.

          (z)  "Purchase Pro Exchange" means the public Exchange currently
               operated by Purchase Pro and any enhancements, modifications and

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               improvements thereto and new versions thereof developed, created
               or operated by Purchase Pro during the Term.

          (aa) "Purchase Pro Improvements" means any and all enhancements,
               modifications or improvements to the Purchase Pro Technology and
               new components, modules or functionality that Purchase Pro may
               create, develop or license during the Term independently of the
               joint development activities of AOL and Purchase Pro hereunder
               specifically for any public Marketplaces or Exchanges, or
               otherwise incorporate during the Term in any public Marketplaces
               or Exchanges operated by Purchase Pro, and all related
               Intellectual Property Rights.

          (bb) "Purchase Pro Private Marketplace Technology" means any and all
               enhancements, modifications or improvements to the Purchase Pro
               Technology and new components, modules or functionality that
               Purchase Pro may create, develop or license during the Term
               independently of the joint development activities of AOL and
               Purchase Pro hereunder specifically for any private Marketplaces
               or Exchanges operated or enabled by Purchase Pro, or that
               Purchase Pro may otherwise incorporate during the Term in any
               private Marketplaces or Exchanges operated or enabled by Purchase
               Pro, and all related Intellectual Property Rights; provided,
               however, that Purchase Pro Private Marketplace Technology shall
               not include any portions of the Purchase Pro Private Marketplace
               Technology (and related Intellectual Property Rights) that are
               also included in any public Marketplace operated or enabled by
               Purchase Pro.

          (cc) "Purchase Pro Project Manager" means Mike Ford and/or other
               individual(s) designated by Purchase Pro in consultation with AOL
               to serve as Purchase Pro's manager of the development activities
               to be jointly undertaken by Purchase Pro and AOL hereunder.

          (dd) "Purchase Pro Technology" means the Existing Purchase Pro
               Platform, all Technology relating to such Existing Purchase Pro
               Platform and the Purchase Pro Exchange, all Purchase Pro
               Improvements, and all other Technology owned or controlled by
               Purchase Pro, and all Intellectual Property Rights relating to
               any of the foregoing, but does not include the Purchase Pro
               Private Marketplace Technology and related Intellectual Property
               Rights.

          (ee) "Technology" means systems, architectures, integration means and
               mechanisms, integration systems, interfaces, software, products,
               information, technology, models, designs, processes, know-how,
               specifications, inventions, algorithms, databases, trade secrets,
               tools and other technology.

          (ff) "Third Party Technology" means any and all proprietary Technology
               owned or controlled by a third party that AOL and

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               Purchase Pro jointly determine to incorporate, include or license
               in connection with the development and use of the Platform, and
               all related Intellectual Property Rights.

    1.2   Other Terms.  Other capitalized terms used herein are defined in
          -----------
the following respective sections of this Agreement:

          "Agreement"                                Preamble
          "Alliance Contact Officer"                 Section 13.1
          "AOL"                                      Preamble
          "AOL Names"                                Section 2.2(e)
          "Bankruptcy Code"                          Section 14.2
          "Confidential Information"                 Section 12.1
          "Development Fee"                          Section 6.1
          "Dispute"                                  Section 13.1
          "GUI"                                      Section 3.2(a)
          "Indemnified Party"                        Section 10.3
          "Indemnifying Party"                       Section 10.3
          "Interactive Marketing Agreement"          Recital C
          "Name Space Integration"                   Section 2.2(e)
          "New Functionality"                        Exhibit A
          "Notice"                                   Section 14.1
          "Phase III Plan"                           Section 4.2
          "Phase I Project Team"                     Section 2.1
          "Phase II Project Team"                    Section 3.1
          "Purchase Pro"                             Preamble
          "Purchase Pro Technical Problem"           Exhibit A
          "Restrictions"                             Section 4.2(c)
          "Suppliers"                                Section 2.2(g)
          "Term"                                     Section 8.1

2.   Phase I.
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      2.1 Development and Staffing. Immediately upon execution of this
          ------------------------
Agreement, AOL and Purchase Pro shall jointly proceed as expeditiously as
possible to develop and launch the Phase I Version, which shall have the
features and functionality set forth in Section 2.2 below. In connection with
such development, the parties shall provide the services of the following
personnel (collectively, "Phase I Project Team"):

          (a)  Purchase Pro shall provide the services of (i) one (1) project
               manager (who may be the Purchase Pro Project Manager), (ii) one
               (1) systems architect, (iii) four (4) product
               designers/developers, and (v) two (2) personnel for quality
               assurance testing.

          (b)  AOL shall provide the services of (i) one (1) project manager
               (who may be the AOL Project Manager), (ii) one (1) engineer to
               implement the Name Space Integration requirements set forth (and
               as defined) below, and (iii) at least one (1) product designer.

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          (c)  The Phase I Project Team shall also include such additional
               personnel and expertise as Purchase Pro and AOL shall mutually
               determine. The personnel to be provided by each of Purchase Pro
               and AOL (as applicable) may consist of existing employees,
               consultants or independent contractors, as well employees,
               consultants or independent contractors of affiliated entities, as
               described in Section 5.2 below.

     2.2  Phase I Version.  The Phase I Version shall consist of the Existing
          ---------------
Purchase Pro Platform and the Purchase Pro Exchange in its currently existing
form (or portion(s) or segment(s) thereof designated by AOL), without any
changes to the design, layout, "look and feel," functionality, location or
content thereof, except for the following:

          (a)  The Phase I Version shall be branded by AOL or an AOL designated
               affiliate (with sub- or ingredient branding for Purchase Pro in a
               form to be mutually determined by AOL and Purchase Pro). AOL
               currently intends to brand the AOL Exchange under the Netscape
               brandname but AOL may also provide access to the AOL Exchange
               through one or more brands of AOL or other AOL designated
               affiliates without Netscape branding.

          (b)  The Phase I Version shall have the capability and functionality
               for the inclusion of advertisements, banners and other
               promotional content on the AOL Exchange (which shall be specified
               by AOL in accordance with the provisions of the Interactive
               Marketing Agreement).

          (c)  At any time before or after the launch of the Phase I Version, by
               written notice to Purchase Pro, AOL may elect, subject to the
               last sentence of this subsection (c), to exclude or block users
               of the AOL Exchange from accessing from the AOL Exchange content
               or service offerings on the Purchase Pro Exchange or in any other
               Marketplaces and Exchanges that are linked or networked to the
               AOL Exchange if any such content or service offering is from or
               relates to an Interactive Service, or if permitting access to
               such content or service offering would violate a contractual
               obligation that AOL has to one of its exclusive or preferred
               partners. Throughout the Term, AOL shall use commercially
               reasonable efforts to limit the scope of any such restrictions to
               ensure that any such restrictions are narrowly tailored and do
               not materially adversely affect the overall economic return
               enjoyed by the parties from the AOL Exchange or the long-term
               commercial viability of the AOL Exchange. If AOL elects to
               exclude or block users of the AOL Exchange from accessing content
               or service offerings pursuant to this subsection (c), the
               provisions of Section 1 of Exhibit E to the Interactive Marketing
               Agreement shall apply.

          (d)  Each page of the AOL Exchange shall have (i) AOL or AOL affiliate
               branded headers and footers, (ii) be located on the URL for the

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               appropriate AOL affiliate with the AOL affiliate as the primary
               domain (e.g., www.PurchasePro.aol.com or
               www.PurchasePro.netscape.com or such other primary domain URL as
               AOL shall designate), such that AOL receives credit for all
               traffic thereto, in each case in accordance with AOL's (or the
               applicable AOL affiliate's) then current generally applicable
               standards, and (iii) contain navigational links to specific
               properties within the AOL Network (as determined by AOL), in each
               case subject to the applicable terms of the Interactive Marketing
               Agreement.

          (e)  The Phase I Version and the AOL Exchange shall include a process
               ("Name Space Integration") by which the (i) AOL user names ("AOL
               Names") of visitors to the AOL Exchange will be accepted by the
               AOL Exchange for identification purposes, (ii) the AOL Exchange
               will not accept any name for identification purposes other than a
               visitor's AOL Name (other than any visitor that already has a
               registered Purchase Pro name) and (iii) the user name selected by
               a visitor to the AOL Exchange who does not have a pre-existing
               AOL or Purchase Pro Name will automatically be assigned as the
               AOL Name for such visitor. The parties shall use commercially
               reasonable efforts to implement a Name Space Integration
               procedure that is as seamless as practicable to visitors to the
               AOL Exchange.

          (f)  The Phase I Version shall include download links to AOL's Instant
               Messaging application and Netscape's Internet Browser to enable
               users to download such client software.

          (g)  AOL shall have the right to approve and control all suppliers of
               goods and services ("Suppliers") to be included in the AOL
               Exchange (and the Phase I Version thereof) and in all AOL-branded
               or AOL-affiliate branded Marketplaces and Exchanges to be linked
               or networked to the AOL Exchange (and the Phase I Version
               thereof). At any time before or after the launch of the Phase I
               Version, by written notice to Purchase Pro, AOL may elect,
               subject to the second to last sentence of this subsection (g), to
               exclude or block users of the AOL Exchange from accessing from
               the AOL exchange Suppliers in the Purchase Pro Exchange or in any
               other Marketplaces and Exchanges that are linked or networked to
               the AOL Exchange if such a Supplier is an Interactive Service, or
               if permitting access to such a Supplier would violate a
               contractual obligation that AOL has to one of its exclusive or
               preferred partners. Throughout the Term, AOL shall use
               commercially reasonable efforts to limit the scope of any such
               contractual obligation to ensure that any such obligation is
               narrowly tailored and does not materially adversely affect the
               overall economic return enjoyed by the parties from the AOL
               Exchange or the long-term commercial viability of the AOL
               Exchange. Purchase Pro will block or exclude such Suppliers and
               Marketplaces and Exchanges within three (3) business days after
               receipt of AOL's notice. The

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               Suppliers and Marketplaces and Exchanges to be initially excluded
               from the Phase I Version of the AOL Exchange shall be determined
               in accordance with the following procedure:

             (i)  Within three (3) business days after execution of this
                  Agreement Purchase Pro will provide AOL with a schedule of all
                  Suppliers currently included in the Purchase Pro Exchange and
                  all Marketplaces and Exchanges that may currently be accessed
                  by users of the Purchase Pro Exchange.

             (ii) AOL shall review the schedule submitted by Purchase Pro and
                  will notify Purchase Pro in writing within three (3) business
                  days after receipt of Purchase Pro's schedule of any
                  Suppliers, Marketplaces or Exchanges that AOL requires to be
                  excluded or blocked from the Phase I Version. Purchase Pro
                  will take all actions necessary to exclude or block such
                  Suppliers, Marketplaces and Exchanges within three (3)
                  business days after receipt of AOL's notice.

The Phase I Project Team shall implement such changes to the design, layout and
functionality of the Existing Purchase Pro Platform and the current version of
Purchase Pro Exchange as are necessary to implement the foregoing features and
functions, all of which are sometimes collectively referred to herein as the
"Phase I Features."

    2.3   Phase II Planning. During Phase I, AOL and Purchase Pro shall prepare
          -----------------
the operating plan for Phase II and for the design, implementation, launch and
operation of the Phase II Version.

     2.4  Timing and Launch.  The Phase I Version will be launched in stages,
          -----------------
with the initial launch (which shall commence promptly after execution hereof)
to consist of the current version of the Purchase Pro Exchange (or portion(s) or
segment(s) thereof designated by AOL) and the URL required under Section 2.2(d)
above, with AOL or AOL affiliate designated branding, Name Space Integration,
and other Phase I Features to be subsequently phased in. The parties shall use
commercially reasonable efforts to complete the launch of the Phase I Version
with all required Phase I Features within fourteen (14) days after the date
hereof. If for any reason the parties are unable to comply with the schedule for
completion of the launch of the Phase I Version or experience any material
delays in such schedule, the AOL Project Manager and the Purchase Pro Project
Manager shall mutually determine the reasons for such delay and shall allocate
additional resources, initiate revised communications processes and/or implement
such other procedures and operational changes and corrective actions as may be
necessary to prevent or redress such delay and comply with the launch schedule.
All launch versions of the Phase I Version of the AOL Exchange shall be subject
to AOL's approval, not to be unreasonably withheld.

     2.5  Hosting, Operation and Other Matters.
          ------------------------------------

          (a)  Purchase Pro shall be responsible at its sole cost and expense
               for the Hosting of the Phase I Version of the AOL Exchange. In
               connection

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               therewith, Purchase Pro shall comply with all of the Hosting and
               Operating Standards set forth in Exhibit A attached hereto and
               incorporated herein by reference. AOL operations personnel may
               review Purchase Pro's infrastructure and procedures for Hosting
               of the Phase I Versions, and Purchase Pro will use commercially
               reasonable efforts to implement any changes recommended by AOL's
               operations personnel. While Purchase Pro is Hosting the Phase I
               Version of the AOL Exchange, Purchase Pro will provide AOL, at
               two week intervals or at such other reasonable intervals as the
               parties mutually agree, with back-up copies of all user
               identification and transaction data contained within the AOL
               Exchange database.

          (b)  Purchase Pro shall be responsible at its sole cost and expense
               for Operation of the Phase I Version. In connection therewith,
               Purchase Pro shall comply with all of the Hosting and Operating
               Standards set forth in Exhibit A attached hereto and incorporated
               herein by reference. AOL operations personnel may review Purchase
               Pro's infrastructure and procedures for Operation of the Phase I
               Version, and Purchase Pro will use commercially reasonable
               efforts to implement any changes recommended by AOL's operations
               personnel. As the party responsible for Operation of the Phase I
               Version, Purchase Pro will track all visitors to the Phase I
               Version and will "tag" all registered users of the Phase I
               Version as AOL Exchange users based upon the new URL required to
               be used under Section 2.2(d) above, and will generate and provide
               AOL with copies of activity and traffic reports and information
               in accordance with AOL's policies and the requirements of the
               Interactive Marketing Agreement.

          (c)  Purchase Pro will maintain and support the code for the Phase I
               Version at its sole cost and expense.

          (d)  At its sole cost and expense, Purchase Pro will provide customer
               support for operation of the Phase I Version at a level that is
               at least as high as the level of customer support that Purchase
               Pro provides for the Purchase Pro Exchange.

          (e)  After launch of the Phase I Version of the AOL Exchange and until
               the launch of the Phase II Version of the AOL Exchange, Purchase
               Pro will use commercially reasonable efforts to provide all
               systems integration services required in connection with the
               operation of Phase I Version and the timely integration of new
               Suppliers, Marketplaces and enterprise resource systems into the
               Phase I Version. Purchase Pro shall be reimbursed for its actual
               costs of providing such services plus an overhead factor equal to
               10% of such actual costs, which amount shall be paid to Purchase
               Pro by AOL and/or the third party requiring such services.
               Purchase Pro will notify AOL if it believes that the provision of
               such services will have

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               a material adverse impact on the development schedule for the
               Platform.

          (f)  After launch of the Phase I Version of the AOL Exchange and until
               the launch of the Phase II Version of the AOL Exchange, AOL and
               Purchase Pro shall jointly develop and launch such updates and
               revisions to the Phase I Version of the AOL Exchange as they
               shall mutually determine without materially interfering with the
               schedule for development and launch of the Phase II Version of
               the AOL Exchange.

3. Phase II.
   --------

     3.1  Development and Staffing.  Immediately upon incorporation of all Phase
          ------------------------
I Features into the Phase I Version, AOL and Purchase Pro shall jointly proceed
as expeditiously as possible to develop and launch the Phase II Version, which
shall have the features and functionality set forth in Section 3.2 below.
Development of the Phase II Version shall be undertaken by the Phase I Project
Team, which shall be supplemented by not less than four (4) additional personnel
designated and provided by Purchase Pro and two (2) additional personnel
designated and provided by AOL (and such other personnel as AOL and Purchase PRO
shall mutually determine) ("Phase II Project Team"). Planning for the Phase II
Version and implementation of Phase II shall commence upon execution of this
Agreement concurrently with the commencement of Phase I.

    3.2   Phase II Version.  The Phase II Version shall be the same as the Phase
          ----------------
I Version (including without limitation all of the Phase I Features), subject to
the following changes:

          (a)  The overall user experience of the AOL Exchange and the Phase II
               Version shall be redesigned, modified and revised in such manner
               as AOL shall reasonably determine, including without limitation
               (i) a new graphic user interface ("GUI"), (ii) changes to the
               layout, design and "look and feel," (iii) increased capacity for
               advertising, banners and other promotional content as compared to
               the Phase I Version, (iv) other features and functionality, (v)
               product and content offerings and (vi) other revisions, all as
               AOL shall reasonably determine. The foregoing revisions,
               modifications and changes to the overall user experience of the
               Phase II Version shall be designed by or under the supervision of
               AOL and then developed and integrated by Purchase Pro through the
               Phase II Project Team. AOL shall have final approval over all
               such revisions, modifications and changes, not to be unreasonably
               withheld.

          (b)  AOL shall have the right, subject to the last sentence of this
               subsection (b) to approve and control all Suppliers to be
               included in the AOL Exchange (and the Phase II Version thereof)
               and in all AOL-branded or AOL-affiliate branded Marketplaces and
               Exchanges to be linked or networked to the AOL Exchange (and the
               Phase II Version

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<PAGE>

               thereof). At any time before or after the launch of the Phase II
               Version, by written notice to Purchase Pro, AOL may elect to
               exclude or block users of the AOL Exchange from accessing from
               the AOL Exchange Suppliers in the Purchase Pro Exchange or in any
               other Marketplaces and Exchanges that are linked or networked to
               the AOL Exchange if such a Supplier is an Interactive Service, or
               if permitting access to such a Supplier would violate a
               contractual obligation that AOL has to one of its exclusive or
               preferred partners. Throughout the Term, AOL shall use
               commercially reasonable efforts to limit the scope of any such
               contractual obligation to ensure that any such obligation is
               narrowly tailored and does not materially adversely affect the
               overall economic return enjoyed by the parties from the AOL
               Exchange or the long-term commercial viability of the AOL
               Exchange. Purchase Pro will block or exclude such Suppliers and
               Marketplaces and Exchanges within three (3) business days after
               receipt of AOL's notice.

          (c)  At any time before or after the launch of the Phase II Version,
               by written notice to Purchase Pro, AOL may elect, subject to the
               last sentence of this subsection (c), to exclude or block users
               of the AOL Exchange from accessing from the AOL Exchange content
               or service offerings on the Purchase Pro Exchange or in any other
               Marketplaces and Exchanges that are linked or networked to the
               AOL Exchange if any such content or service offering is from or
               relates to an Interactive Service, or if permitting access to
               such content or service offering would violate a contractual
               obligation that AOL has to one of its exclusive or preferred
               partners. Throughout the Term, AOL shall use commercially
               reasonable efforts to limit the scope of any such restrictions to
               ensure that any such restrictions are narrowly tailored and do
               not materially adversely affect the overall economic return
               enjoyed by the parties from the AOL Exchange or the long-term
               commercial viability of the AOL Exchange. If AOL elects to
               exclude or block users of the AOL Exchange from accessing content
               or service offerings pursuant to this subsection (c), the
               provisions of Section 1 of Exhibit E to the Interactive Marketing
               Agreement shall apply.

          (d)  The Phase II Version shall include download links to AOL's
               Instant Messaging application and Netscape's Internet Browser to
               enable users to download such client software.

          (e)  The Phase II Version will also include systems and procedures
               required to be developed to (i) implement the payment tracking
               and reporting provisions of the Interactive Marketing Agreement,
               (ii) resolve name space integration issues and (iii) provide any
               other functionality required under the Interactive Marketing
               Agreement.

                                      -12-
<PAGE>

          (f)  In addition to the foregoing features, the Phase II Version will
               also include such other features and functionality as AOL and
               Purchase Pro shall mutually determine.

    3.3   Timing and Launch.  The Phase II Version will be launched in stages
          -----------------
with additional features and functionality to be added as and when completed.
The parties shall use commercially reasonable efforts to complete the launch of
the final Phase II Version within ninety (90) days after the date hereof. If for
any reason the parties are unable to comply with the schedule for completion of
the launch of the Phase II Version or experience any material delays in such
schedule, the AOL Project Manager and the Purchase Pro Project Manager shall
mutually determine the reasons for such delay and shall allocate additional
resources, initiate revised communications processes and/or implement such other
procedures and operational changes and corrective actions as may be necessary to
prevent or redress such delay and comply with the launch schedule. All launch
versions of the Phase II Version of the AOL Exchange shall be subject to AOL's
approval, not to be unreasonably withheld.

    3.4   Hosting, Operation and Other Matters.
          ------------------------------------
          (a)  Purchase Pro will be responsible for the Hosting of the Phase II
               Version. In connection therewith, Purchase Pro shall comply with
               all of the applicable Hosting and Operating Standards set forth
               in Exhibit A. AOL operations personnel may review Purchase Pro's
               infrastructure and procedures for Hosting of the Phase II
               Version, and Purchase Pro will use commercially reasonable
               efforts to implement any changes recommended by AOL's operations
               personnel. While Purchase Pro is Hosting the Phase II Version of
               the AOL Exchange, Purchase Pro will provide AOL, at two week
               intervals or at such other reasonable intervals as the parties
               mutually agree, with back-up copies of all user identification
               and transaction data contained within the AOL Exchange database.
               Notwithstanding the foregoing, upon written notice to Purchaser
               Pro, AOL will have the right at any time to elect to take over
               Hosting of the Phase II Version or to require that such Hosting
               be provided by a third party designated by AOL. Each party shall
               pay and be responsible for its own costs and expenses of Hosting
               the Phase II Version; provided however, if AOL elects to take
               over Hosting of the Phase II Version or to require that such
               Hosting be provided by a third party designated by AOL, then (i)
               other than Purchase Pro's personnel costs (which AOL will not be
               obliged to reimburse), AOL shall bear 100% of the migration and
               start-up costs associated with the such take over of Hosting by
               AOL or such third party and (ii) Purchase Pro shall split evenly
               with AOL, AOL's reasonable costs and expenses to provide or have
               a third party provide such Hosting once the migration is complete
               (however, in no event will Purchase Pro be required to contribute
               monthly to AOL more than one hundred percent (100%) of Purchase
               Pro's monthly total normal operational costs and expenses of
               providing Hosting at the time AOL elected to take over Hosting of
               the Phase II Version or

                                      -13-
<PAGE>

               required that such Hosting be provided by a third party
               designated by AOL). The parties will develop and implement an
               appropriate migration procedure in the event that AOL elects to
               take over (or requires a third party to take over) the Hosting of
               the Phase II Version from Purchase Pro. Such migration procedure
               will include identification and negotiation of any changes to
               existing third party licenses or new third party licenses that
               may be required in order to implement the change in Hosting. In
               connection therewith, Purchase Pro will use commercially
               reasonable efforts to complete the migration process in an
               orderly manner promptly after receipt of AOL's notice. AOL and
               Purchase Pro shall mutually determine the respective
               responsibilities of the parties for the costs of Hosting
               migration. In no event shall Purchase Pro cease primary Hosting
               of the Phase II Version until such time as the migration process
               has been fully completed.

          (b)  Purchase Pro shall be responsible at its sole cost and expense
               for Operation of the Phase II Version. In connection therewith,
               Purchase Pro shall comply with all of the applicable Hosting and
               Operating Standards set forth in Exhibit A. AOL operations
               personnel may review Purchase Pro's infrastructure and procedures
               for Operation of the Phase II Version, and Purchase Pro will use
               commercially reasonable efforts to implement any changes
               recommended by AOL's operations personnel. As the party
               responsible for Operation of the Phase II Version, Purchase Pro
               will track all visitors to the Phase II Version and will "tag"
               all registered users of the Phase II Version as AOL Exchange
               users based upon the new URL required to be used under Section
               2.2(d) above, and will generate and provide AOL with copies of
               activity and traffic reports and information in accordance with
               AOL's policies and the requirements of the Interactive Marketing
               Agreement.

          (c)  Purchase Pro will maintain and support the code for the Phase II
               Version at its sole cost and expense, except as AOL and Purchase
               Pro shall mutually determine.

          (d)  Purchase Pro will provide front line (also known as "level 1")
               customer support for the operation of the Phase II Version at a
               level that is at least as high as the level of front line
               customer support that Purchase Pro provides for the Purchase Pro
               Exchange. At its election AOL may take over or engage a third
               party to provide front line customer support for the operation of
               the Phase II Version. Each of Purchase Pro and AOL shall provide
               back line (also known as "level 2") customer support for its own
               components of the Phase II Version, regardless of which party
               provides front line customer support. Each of AOL and Purchase
               Pro shall be responsible for its own costs and expenses of
               providing front and back line customer support for the Phase II
               Version; provided however, if AOL elects to take over front

                                      -14-
<PAGE>

               line customer support of the Phase II Version or to require that
               such front line customer support be provided by a third party
               designated by AOL, AOL shall be responsible for all costs and
               expenses associated with providing such front line customer
               support.

          (e)  Purchase Pro will use commercially reasonable efforts to provide
               all systems integration services required in connection with the
               operation of Phase II Version and the timely integration of new
               Suppliers, Marketplaces and enterprise resource systems into the
               Phase II Version. Purchase Pro shall be reimbursed for its actual
               costs of providing such services plus an overhead factor equal to
               10% of such actual costs, which amount shall be paid to Purchase
               Pro by AOL and/or the third party requiring such services.
               Purchase Pro will notify AOL if it believes that the provision of
               such services will have a material adverse impact on Phase II and
               the development schedule for the Phase II Version or the
               Platform.

          (f)  After launch of the Phase II Version of the AOL Exchange and
               until the launch of the Phase III Version of the AOL Exchange,
               AOL and Purchase Pro shall jointly develop and launch such
               updates and revisions to the Phase II Version of the AOL Exchange
               as they shall mutually determine without materially interfering
               with the schedule for development and launch of the Phase III
               Version of the AOL Exchange.

4.  Phase III and Additional Development Activities.
    -----------------------------------------------

    4.1   Phase III Version.  While the Phase I Version and the Phase II Version
          -----------------
are based largely upon the Existing Purchase Pro Platform and Purchase Pro
Exchange in its current form, the parties intend that the Phase III Version will
be a new, redesigned platform incorporating or using the Purchase Pro
Technology, AOL Technology, iPlanet Platform Technology, Jointly Developed
Technology, and possibly some or all of the iPlanet Vortex Technology and Third
Party Technology. It is the intention of the parties that the AOL Exchange will
feature a substantial set of the AOL Technology that is generally included in
other AOL offerings for the business market. AOL and Purchase Pro shall jointly
proceed as expeditiously as possible to develop and launch the Phase III
Version. Phase III shall proceed concurrently with Phase I and Phase II.

    4.2   Phase III Plan.  As the first step of Phase III, the AOL Project
          --------------
Manager and the Purchase Pro Project Manager shall form a planning team for
Phase III which shall proceed to prepare a detailed plan for the specifications,
design, implementation, launch and operation of the Phase III Version ("Phase
III Plan"). Such planning team shall consist of the AOL Project Manager, the
Purchase Pro Project Manager, the equivalent of a total of approximately five
(5) full-time personnel from AOL and five (5) full-time personnel from Purchase
Pro, and such other personnel from AOL and Purchase Pro as each of them shall
designate. The planning process shall commence at such time as AOL and Purchase
Pro shall mutually agree but shall commence prior to completion of Phase II. The
parties shall use commercially reasonable efforts to complete the Phase III Plan
within thirty (30) days

                                      -15-
<PAGE>

after commencement thereof. Any dispute or deadlock relating to the contents of
the Phase III Plan that are to be mutually determined by AOL and Purchase Pro
shall be resolved pursuant to the procedure set forth in Section 13.1 below. The
Phase III Plan shall set forth the following:

          (a)  The specifications for and the technical standards to be
               supported by the Phase III Version of the Platform, which shall
               be mutually determined by AOL and Purchase Pro.

          (b)  The specifications for and the anticipated features and
               functionality of the Phase III Version of the AOL Exchange, which
               shall be designated by AOL (consistent with the specifications
               and features, functions, technical standards and capability or
               capacity of the Platform determined under Section 4.2(a)).

          (c)  The Purchase Pro Technology to be included in or used with the
               Phase III Version and the Platform, which shall be designated by
               AOL in consultation with Purchase Pro and licensed to AOL by
               Purchase Pro under Section 7.1 below. To the extent that the use
               of any portion of the Purchase Pro Technology is subject to
               restrictions or limitations ("Restrictions") under agreements
               between Purchase Pro and third parties, the use of such Purchase
               Pro Technology in connection with the Phase III Version, the
               Platform and the AOL Exchange will be subject to such
               Restrictions; provided, however, that Purchase Pro will use its
               best efforts to avoid any new Restrictions affecting Purchase Pro
               Technology arising after the date of this Agreement, including
               its best efforts to cause customers to agree not to require or
               impose such Restrictions. If after the use of such best efforts a
               Purchase Pro customer still requires that such Restrictions be
               imposed, Purchase Pro shall be entitled to agree to such
               Restrictions.

          (d)  The AOL Technology to be included in Phase III Version, which
               shall be designated by AOL in consultation with Purchase Pro. AOL
               will grant to Purchase Pro a royalty-free license to any AOL
               Technology to be included in or used with the Phase III Version
               and the Platform on AOL's standard terms and conditions pursuant
               to a separate license agreement to be negotiated and entered into
               by the parties. Such license agreement shall provide that
               Purchase Pro's rights with respect to such AOL Technology shall
               continue during the Term and for a period of twelve (12) months
               thereafter; provided, however, that, upon Purchase Pro's request,
               AOL will negotiate reasonably and in good faith toward an
               extension of such license. Notwithstanding the foregoing, such
               license agreement shall provide that all of Purchase Pro's rights
               with respect to such AOL Technology shall terminate immediately
               and automatically in the event that (i) AOL terminates this
               Agreement due to a material breach by Purchase Pro, (ii) Purchase
               Pro exercises its right to terminate this Agreement under Section
               13.1 below, or (iii) there is a Change of Control of Purchase

                                      -16-
<PAGE>

               Pro resulting in control of Purchase Pro by an Interactive
               Service. To the extent that the use of any portion of the AOL
               Technology is subject to Restrictions under agreements between
               AOL and third parties, the use of such AOL Technology in
               connection with the Phase III Version, the Platform and the AOL
               Exchange will be subject to such Restrictions; provided, however,
               that AOL will use its best efforts to avoid any new Restrictions
               affecting AOL Technology arising after the date of this
               Agreement, including its best efforts to cause customers to agree
               not to require or impose such Restrictions. If after the use of
               such best efforts an AOL customer still requires that such
               Restrictions be imposed, AOL shall be entitled to agree to such
               Restrictions.

          (e)  The iPlanet Platform Technology to be included in or used with
               the Phase III Version, which shall be mutually determined by AOL
               and Purchase Pro and licensed to Purchase Pro by AOL under
               Section 7.2 below.

          (f)  Any iPlanet Vortex Technology and Third Party Technology to be
               included in or used with the Phase III Version, which shall be
               mutually determined by AOL and Purchase Pro. AOL will negotiate
               and endeavor to obtain from iPlanet/Sun Microsystems a source
               code license to use any iPlanet Vortex Technology to be included
               in or used with the Phase III Version. AOL and Purchase Pro shall
               mutually determine the party responsible for negotiating and
               obtaining licenses of other Third Party Technology to be included
               in or used with the Phase III Version. The terms of all licenses
               to be obtained under this Section 4.2(f) shall be subject to the
               mutual approval of AOL and Purchase Pro, and the costs of such
               licenses shall be paid by the parties as provided in Section 6.2
               below.

          (g)  The schedule and milestones for development of the Phase III
               Version, and contingency procedures for additional resource
               allocation, communications changes and/or such other procedural
               and operational changes and corrective actions as may be required
               in the event that the parties are unable to comply with such
               schedule and/or milestones, all of which shall be mutually
               determined by AOL and Purchase Pro.

          (h)  The team required to develop the Phase III Version, and the
               personnel to be contributed to such team by AOL and Purchase Pro,
               which shall be mutually determined by AOL and Purchase Pro. It is
               anticipated that development of Phase III Version will require a
               team of approximately eighty (80) persons, of which Purchase
               agrees to contribute approximately thirty (30) and AOL agrees to
               contribute approximately fifty (50).

                                      -17-
<PAGE>

          (i)  The budgets for the development and Hosting of the Phase III
               Version, which shall be mutually determined by AOL and Purchase
               Pro.

          (j)  Any system architecture required in order to permit AOL or a
               third party to take over Hosting, customer support and/or
               Operation of the Phase III Version of the AOL Exchange under
               Sections 4.4(a) and 4.4(b) below, which shall be mutually
               determined by AOL and Purchase Pro.

          (k)  The respective responsibilities of AOL and Purchase Pro for code
               maintenance for the Phase III Version and the Platform, which
               shall be mutually determined by AOL and Purchase Pro.

          (l)  The systems and procedures required to be developed to (i)
               implement the payment tracking and reporting provisions of the
               Interactive Marketing Agreement, (ii) resolve name space
               integration issues and (iii) provide any other functionality
               required under the Interactive Marketing Agreement, all of which
               shall be mutually determined by AOL and Purchase Pro.

          (m)  Such other matters as AOL and Purchase Pro shall mutually
               determine.

     4.3  Additional Matters Relating to Phase III Version.
          ------------------------------------------------

          (a)  AOL shall have final approval over all aspects of the Phase III
               Version of the AOL Exchange, including without limitation the
               overall user experience of the AOL Exchange (e.g., the GUI,
               layout, design, "look and feel," etc.), advertising and
               promotion, features and functionality, and product and content
               offerings (consistent with the specifications and features,
               functions, technical standards and capability or capacity of the
               Platform). AOL and Purchase Pro shall have mutual final approval
               over the Platform for the Phase III Version of the AOL Exchange,
               subject to the Dispute resolution procedures set forth in Section
               13.1.

          (b)  AOL shall have the right, subject to the last sentence of this
               subsection(b), to approve and control all Suppliers to be
               included in the AOL Exchange (and the Phase III Version thereof)
               and in all AOL-branded or AOL-affiliate branded Marketplaces and
               Exchanges to be linked or networked to the AOL Exchange (and the
               Phase III Version thereof). At any time before or after the
               launch of the Phase III Version, by written notice to Purchase
               Pro, AOL may elect to exclude or block users of the AOL Exchange
               from accessing from the AOL Exchange Suppliers in the Purchase
               Pro Exchange or in any other Marketplaces and Exchanges that are
               linked or networked to the AOL Exchange if such a Supplier is an
               Interactive Service, or if

                                      -18-
<PAGE>

               permitting access to such a Supplier would violate a contractual
               obligation that AOL has to one of its exclusive or preferred
               partners. Throughout the Term, AOL shall use commercially
               reasonable efforts to limit the scope of any such contractual
               obligation to ensure that any such obligation is narrowly
               tailored and does not materially adversely affect the overall
               economic return enjoyed by the parties from the AOL Exchange or
               the long-term commercial viability of the AOL Exchange. Purchase
               Pro will block or exclude such Suppliers and Marketplaces and
               Exchanges within three (3) business days after receipt of AOL's
               notice.

          (c)  At any time before or after the launch of the Phase III Version,
               by written notice to Purchase Pro, AOL may elect, subject to the
               last sentence of this subsection (c), to exclude or block users
               of the AOL Exchange from accessing from the AOL Exchange content
               or service offerings on the Purchase Pro Exchange or in any other
               Marketplaces and Exchanges that are linked or networked to the
               AOL Exchange if any such content or service offering is from or
               relates to an Interactive Service, or if permitting access to
               such content or service offering would violate a contractual
               obligation that AOL has to one of its exclusive or preferred
               partners. Throughout the Term, AOL shall use commercially
               reasonable efforts to limit the scope of any such restrictions to
               ensure that any such restrictions are narrowly tailored and do
               not materially adversely affect the overall economic return
               enjoyed by the parties from the AOL Exchange or the long-term
               commercial viability of the AOL Exchange. If AOL elects to
               exclude or block users of the AOL Exchange from accessing content
               or service offerings pursuant to this subsection (c), the
               provisions of Section 1 of Exhibit E to the Interactive Marketing
               Agreement shall apply

          (d)  The Phase III Version shall include download links to AOL's
               Instant Messaging application and Netscape's Internet Browser to
               enable users to download such client software.

          (e)  During the Term, if Purchase Pro develops, creates or licenses
               any Purchase Pro Improvements, Purchase Pro shall make available
               for inclusion in the Phase III Version and the Platform on an
               ongoing basis any such Purchase Pro Improvements as AOL shall
               request. Such Purchase Pro Improvements shall be licensed to AOL
               by Purchase Pro pursuant to Section 7.1 below.

          (f)  During the Term, AOL shall take all actions necessary to make
               available for use in connection with the Phase III Version, the
               Platform and the AOL Exchange such additional or new AOL
               Technology as AOL shall designate. Such additional or new AOL
               Technology shall be licensed to Purchase Pro pursuant to the
               procedure and terms set forth in Section 4.2(d) above.

                                      -19-
<PAGE>

          (g)  During the Term, Purchase Pro will make available for inclusion
               in the Phase III Version, the Platform and the AOL Exchange on an
               ongoing basis any Purchase Pro Private Marketplace Technology
               that (i) Purchase Pro makes available for inclusion in more than
               one private Marketplace or Exchange during the Term and (ii) AOL
               designates. The inclusion of any such Purchase Pro Private
               Marketplace Technology in the Phase III Version, the Platform and
               the AOL Exchange and the use of such Purchase Pro Private
               Marketplace Technology in connection therewith shall be subject
               to any Restrictions applicable to such Purchase Pro Private
               Marketplace Technology under the applicable agreements between
               Purchase Pro and any party for which such Purchase Pro Private
               Marketplace Technology was developed, and to Purchase Pro's
               pricing and availability policies applicable to the use of such
               Purchase Pro Private Marketplace Technology, provided, however,
               that Purchase Pro will use its best efforts to avoid any new
               Restrictions affecting Purchase Pro Private Marketplace
               Technology arising after the date of this Agreement, including
               best efforts to cause customers to agree not to require or impose
               such Restrictions. If after the use of such best efforts a
               Purchase Pro customer still requires that such Restrictions be
               imposed, Purchase Pro shall be entitled to agree to such
               Restrictions.. Purchase Pro shall license such Purchase Pro
               Private Marketplace Technology to AOL pursuant to Section 7.3
               below. Upon identification of any such Purchase Pro Private
               Marketplace Technology for inclusion in the Phase III Version,
               the Platform or the AOL Exchange, Purchase Pro shall promptly
               notify AOL of any Restrictions relating to such Purchase Pro
               Private Marketplace Technology and of Purchase Pro's pricing and
               availability policies applicable to the use of such Purchase Pro
               Private Marketplace Technology.

          (h)  During the Term, AOL will make available for inclusion in the
               Phase III Version, the Platform and the AOL Exchange on an
               ongoing basis any AOL Private Marketplace Technology that (i) AOL
               makes available for inclusion in more than one private
               Marketplace or Exchange during the Term and (ii) AOL and Purchase
               Pro mutually designate. The inclusion of any such AOL Private
               Marketplace Technology in the Phase III Version, the Platform and
               the AOL Exchange and the use of such AOL Private Marketplace
               Technology in connection therewith shall be subject to any
               Restrictions applicable to such AOL Private Marketplace
               Technology under the applicable agreements between AOL and any
               party for which such AOL Private Marketplace Technology was
               developed, and to AOL's pricing and availability policies
               applicable to the use of such AOL Private Marketplace Technology,
               provided, however, that AOL will use its best efforts to avoid
               any new Restrictions affecting AOL Private Marketplace Technology
               arising after the date of this Agreement, including best efforts
               to cause customers to agree not to require or

                                      -20-
<PAGE>

          impose such Restrictions. If after the use of such best efforts an AOL
          customer still requires that such Restrictions be imposed, AOL shall
          be entitled to agree to such Restrictions. AOL shall license such AOL
          Private Marketplace Technology to Purchase Pro pursuant to Section 7.3
          below. Upon identification of any such AOL Private Marketplace
          Technology for inclusion in the Phase III Version, the Platform or the
          AOL Exchange, AOL shall promptly notify Purchase Pro of any
          Restrictions relating to such AOL Private Marketplace Technology and
          of AOL's pricing and availability policies applicable to the use of
          such AOL Private Marketplace Technology.

     4.4  Hosting, Operation and Other Matters.
          ------------------------------------

          (a)  If AOL has not elected to take over Hosting of the Phase II
               Version or to have a third party handle Hosting of the Phase II
               Version, Purchase Pro will be responsible for the Hosting of the
               Phase III Version and the AOL Exchange, both during and after the
               Term; provided however, unless otherwise mutually agreed in
               writing, the Hosting of the Phase III Version and the AOL
               Exchange by Purchase Pro shall continue for only six (6) months
               after the Term if this Agreement is terminated by Purchase Pro
               due to a material breach by AOL or pursuant to Section 13.1. In
               connection therewith, Purchase Pro shall comply with all of the
               applicable Hosting and Operating Standards set forth in Exhibit
               A. AOL operations personnel may review Purchase Pro's
               infrastructure and procedures for Hosting of the Phase III
               Version and the AOL Exchange, and Purchase Pro will use all
               commercially reasonable efforts to implement any changes
               recommended by AOL's operations personnel. While Purchase Pro is
               Hosting the Phase III Version and the AOL Exchange, Purchase Pro
               will provide AOL, at two week intervals or at such other
               reasonable intervals as the parties mutually agree, with back-up
               copies of all user identification and transaction data contained
               within the AOL Exchange database. Notwithstanding the foregoing,
               upon written notice to Purchaser Pro, AOL will have the right at
               any time to elect to take over Hosting of the Phase III Version
               and the AOL Exchange or to require that such Hosting be provided
               by a third party designated by AOL. During the Term, each party
               shall pay and be responsible for its own costs and expenses of
               Hosting the Phase III Version and the AOL Exchange; provided
               however, if AOL elects to take over Hosting of the Phase III
               Version and AOL Exchange or to require that such Hosting be
               provided by a third party designated by AOL, then (i) other than
               Purchase Pro's personnel costs (which AOL will not be obliged to
               reimburse), AOL shall bear 100% of the migration and start-up
               costs associated with the such take over of Hosting by AOL or
               such third party and (ii) Purchase Pro shall split evenly with
               AOL, AOL's reasonable costs and expenses to provide or have a
               third party provide such Hosting once the migration is complete
               (however, in no event will Purchase Pro be required to contribute
               to AOL monthly

                                      -21-
<PAGE>

               more than one hundred percent (100%) of Purchase Pro's monthly
               total normal operational costs and expenses of providing Hosting
               at the time AOL elected to take over Hosting of the Phase III
               Version and AOL Exchange or required that such Hosting be
               provided by a third party designated by AOL). AOL will be
               responsible for all costs of Hosting the AOL Exchange after
               expiration of the Term and will reimburse Purchase Pro for the
               actual costs incurred by Purchase Pro (if any) in connection with
               Hosting the AOL Exchange following expiration of the Term plus an
               overhead factor of 10%, subject to annual increases tied to the
               changes in the Consumer Price Index (for all urban consumers).
               The parties will develop and implement an appropriate migration
               procedure in the event that AOL elects to take over (or requires
               a third party to take over) the Hosting of the Phase III Version
               and the AOL Exchange from Purchase Pro. Such migration procedure
               will include identification and negotiation of any changes to
               existing third party licenses or new third party licenses that
               may be required in order to implement the change in Hosting. In
               connection therewith, Purchase Pro will use commercially
               reasonable efforts to complete the migration process in an
               orderly manner promptly after receipt of AOL's notice. In no
               event shall Purchase Pro cease primary Hosting of the Phase III
               Version and the AOL Exchange until such time as the migration
               process has been fully completed.

          (b)  Purchase Pro shall be responsible for Operation of the Phase III
               Version and the AOL Exchange, both during and after the Term;
               provided however, unless otherwise mutually agreed in writing,
               the Operation of the Phase III Version and the AOL Exchange by
               Purchase Pro shall continue for only six (6) months after the
               Term if this Agreement is terminated by Purchase Pro due to a
               material breach by AOL or pursuant to Section 13.1. In connection
               therewith, Purchase Pro shall comply with all of the applicable
               Hosting and Operating Standards set forth in Exhibit A. AOL
               operations personnel may review Purchase Pro's infrastructure and
               procedures for Operation of the Phase III Version and the AOL
               Exchange, and Purchase Pro will use all commercially reasonable
               efforts to implement any changes recommended by AOL's operations
               personnel. Notwithstanding the foregoing, upon written notice to
               Purchaser Pro, AOL will have the right at any time to elect to
               take over Operation of the Phase III Version and the AOL
               Exchange, or to require that such Operation be handled by a third
               party designated by AOL. Each party shall pay and be responsible
               for its own costs and expenses of handling Operation of Phase III
               Version and the AOL Exchange, both during and after the Term;
               provided however, if AOL elects to handle Operation of the Phase
               III Version and AOL Exchange or to require that such Operation be
               handled by a third party designated by AOL, AOL shall be
               responsible for all costs and expenses associated with handling
               such Operation. The parties will

                                      -22-
<PAGE>

               develop and implement an appropriate migration procedure in the
               event that AOL elects to take over (or requires a third party to
               take over) Operation of the Phase III Version and the AOL
               Exchange from Purchase Pro. Such migration procedure will include
               identification and negotiation of any changes to existing third
               party licenses or new third party licenses that may be required
               in order to implement the change in Operation. In connection
               therewith, Purchase Pro will use commercially reasonable efforts
               to complete the migration process in an orderly manner promptly
               after receipt of AOL's notice. In no event shall Purchase Pro
               cease Operation of the Phase III Version and the AOL Exchange
               until such time as the migration process has been fully
               completed.

          (c)  The party responsible for Operation of the Phase III Version and
               the AOL Exchange will track all visitors to the Phase III Version
               and will "tag" all registered users of the Phase III Version as
               AOL Exchange users based upon the new URL required to be used
               under Section 2.2(d) above, and will generate and provide AOL and
               Purchase Pro with copies of activity and traffic reports and
               information in accordance with AOL's policies and the
               requirements of the Interactive Marketing Agreement.

          (d)  During the Term the overall direction and development of the
               Platform after completion of the Phase III version will be
               jointly developed by the parties. During the term Purchase Pro
               and AOL shall each perform their respective responsibilities with
               respect to code maintenance for the Phase III Version and the AOL
               Exchange, as set forth in the Phase III Plan. After the Term
               Purchase Pro will provide code maintenance for the Purchase Pro
               contribution to the Platform during the Term as reasonably
               requested by AOL; provided, however, unless otherwise mutually
               agreed in writing, such code maintenance by Purchase Pro shall
               continue for only six (6) months after the Term if this Agreement
               is terminated by Purchase Pro due to a material breach by AOL or
               pursuant to Section 13.1. During the Term, each party shall be
               responsible for its own costs and expenses associated with such
               maintenance. After the term, AOL shall reimburse Purchase Pro for
               Purchase Pro's actual costs (if any) of providing maintenance
               requested by AOL plus an overhead factor equal to 10% of such
               actual costs, subject to annual increases based upon changes in
               the Consumer Price Index (for all urban consumers).

          (e)  If AOL does not elect to take over front line customer support
               for the Phase II Version, both during and after the Term,
               Purchase Pro will provide front line customer support for the
               operation of the Phase III Version and the AOL Exchange at a
               level that is at least as high as the level of front line
               customer support that Purchase Pro provides for the Purchase Pro
               Exchange. At its election AOL may take over or engage a third
               party to provide front line customer support for the operation

                                      -23-
<PAGE>

               of the Phase III Version and the AOL Exchange. Both during and
               after the Term, each of Purchase Pro and AOL shall provide "level
               2" or back line customer support for its own components of the
               Phase III Version and the AOL Exchange, regardless of which party
               provides front line customer support. During the Term, each party
               shall be responsible for its own costs and expenses of providing
               front and back line customer support for the Phase III Version
               and the AOL Exchange; provided however, if AOL elects to take
               over front line customer support of the Phase III Version and AOL
               Exchange or to require that such front line customer support be
               provided by a third party designated by AOL, AOL shall be
               responsible for all costs and expenses associated with providing
               such front line customer support. After the term, if and to the
               extent that Purchase Pro is providing customer support to the AOL
               Exchange, AOL shall reimburse Purchase Pro for Purchase Pro's
               actual costs (if any) of providing such customer service plus an
               overhead factor equal to 10% of such actual costs, subject to
               annual increases based upon changes in the Consumer Price Index
               (for all urban consumers).

          (f)  During and after the Term, Purchase Pro will use commercially
               reasonable efforts to provide all systems integration services
               required in connection with the operation of Phase III Version
               and the AOL Exchange, and the timely integration of new
               Suppliers, Marketplaces and enterprise resource systems into the
               Phase III Version and the AOL Exchange. Purchase Pro shall be
               reimbursed for its actual costs of providing such services plus
               an overhead factor equal to 10% of such actual costs, which
               amount shall be paid to Purchase Pro by AOL and/or the third
               party requiring such services. As part of the Phase III joint
               development activities hereunder, the parties will develop tools,
               interfaces and procedures to enable a third party to provide
               systems integration. AOL shall have the right at any time during
               or after the Term to require that responsibility for systems
               integration be taken over by a AOL or by a third party designated
               by AOL.

     4.5  Implementation and Launch.  The parties shall use commercially
          -------------------------
reasonable efforts to complete Phase III and commercially launch the first
Marketplace based on the Phase III Version within one hundred and eighty (180)
days after the date hereof and within two hundred seventy (270) days after the
date hereof for the launch of the entire AOL Exchange. If for any reason the
parties are unable to comply with the schedule for completion of the launch of
the Phase III Version or experience any material delays in such schedule, the
AOL Project Manager and the Purchase Pro Project Manager shall mutually
determine the reasons for such delay and shall allocate additional resources,
initiate revised communications processes and/or implement such other procedures
and operational changes and corrective actions as may be necessary to prevent or
redress such delay and comply with the launch schedule. All launch versions of
the Phase III Version of the AOL Exchange shall be subject to AOL's approval,
not to be unreasonably withheld.

                                      -24-
<PAGE>

     4.6  Additional Development and Services. After completion of Phase III,
          -----------------------------------
AOL and Purchase Pro may perform such additional development and other services
as may be required hereunder and/or as AOL and Purchase Pro may mutually
determine, including without limitation Platform customization, development of
upgrades to and new or modified versions of the Platform, integration of
subscribers and Suppliers and additional services to be offered to third parties
outside of the core Platform, such as financial services, logistics and
tracking.

5.  Supervision; Employees and Other Matters.
    ----------------------------------------

     5.1  Overall Supervision. The development of the Platform and all
          -------------------
activities during Phase I, Phase II and Phase III shall be performed under the
general and joint supervision of the AOL Project Manager and the Purchase Pro
Project Manager. The AOL Project Manager shall be principally responsible for
supervising the personnel designated by AOL to participate in the development
of the Platform, and the Purchase Pro Project Manager shall be principally
responsible for supervising the personnel designated by Purchase Pro to
participate in the development of the Platform. The AOL Project Manager shall be
designated as the lead project manager for development of the Platform.

     5.2  Personnel. The personnel to be provided by each of Purchase Pro and
          ---------
AOL (as applicable) for Phase I, Phase II and Phase III shall consist of
qualified engineers and designers who may be existing employees of Purchase Pro
or AOL and/or independent contractors or consultants engaged by Purchase Pro or
AOL. AOL may provide employees, consultants or independent contractors of its
affiliated entities or iPlanet in lieu of or in addition to employees,
consultants or independent contractors of AOL.

     5.3  Location of Joint Development Activities. If in connection with the
          ----------------------------------------
development of the Platform it is necessary for any development activities of
the parties or the personnel designated to participate in development of the
Platform by AOL and Purchase Pro to be located in the same facilities, such
activities and personnel shall be located at facilities mutually designated by
AOL and Purchase Pro. The parties will cooperate to keep to a commercially
reasonable minimum the amount of joint development activities for which it is
necessary to locate their respective personnel in the same facilities.

     5.4  Responsibility for Employees. Each party shall be responsible for
          ----------------------------
paying all salaries, wages, employee benefits and associated expenses for which
its own employees are eligible under such party's employment policies, any
legally required benefits or insurance, any taxes or governmental charges
payable or subject to withholding in connection with the employment of such
party, and any expenses associated with such employees activities under this
Agreement. Each party shall have ultimate supervision and control with respect
to its own respective employees and shall have no right to discipline, terminate
or reassign any employees of the other party. In the event that either party
makes a reasonable and good faith determination that an employee of the other
party working on development activities hereunder lacks requisite skills or
experience, does not work well with other project team members, or is otherwise
unsatisfactory, the parties will consult with one another in good faith
regarding whether such employee should be replaced, provided that the final
determination as to whether to retain, reassign or terminate any employee shall
be made solely by the party employing such individual.

                                      -25-
<PAGE>

     5.5  Priority. Purchase Pro agrees to give the highest level of priority to
          --------
the development services to be provided by Purchase Pro and its employees
hereunder and to give development of the Platform priority over any other
development services and projects undertaken by Purchase Pro during the Term.
AOL agrees that its employees who work primarily on the development of the
Platform will give their highest level of priority to the development services
to be provided by themselves hereunder and to give development of the Platform
priority over any other development services and projects undertaken by such
employees. At all times during and after the Term, the parties will dedicate
sufficient employees, resources and management attention to its obligations
hereunder so as to perform such obligations in a timely and efficient manner in
light of commercial exigencies.

6.  Development and Licensing Costs.
    -------------------------------

     6.1  Purchase Pro Development Contribution. Purchase Pro agrees to pay to
          -------------------------------------
AOL a development fee ("Development Fee") of twenty million dollars
($20,000,000) which shall be paid in eight (8) consecutive quarterly
installments of two million five hundred thousand dollars ($2,500,000) each,
with the first such payment due and payable on August 1, 2000 and each
subsequent payment due and payable three (3) months after the due date of
immediately preceding payment.

     6.2  Licensing. AOL and Purchase Pro will mutually determine their
          ---------
respective responsibilities for costs of licensing or acquiring any of the
iPlanet Vortex Technology, any infrastructure technology (including if licensed
from iPlanet), and/or Third Party Technology that AOL and Purchase Pro mutually
determine to incorporate or include in the Platform or use in connection with
the Platform. If the parties cannot agree, the disagreement will not be subject
to resolution under Section 13.1.

     6.3  Purchase Pro Employees and Equipment. In addition to the costs to be
          ------------------------------------
funded by Purchase Pro under Sections 6.1 and 6.2 above, Purchase Pro shall also
be responsible for and shall pay salaries, fees and all other compensation,
benefits, expenses and travel costs of all employees, personnel, consultants and
independent contractors contributed by Purchase Pro to perform development
activities and services hereunder, and the costs of all Purchase Pro facilities
and required hardware and other equipment for the joint development activities
hereunder.

     6.4  Completion. AOL and Purchase Pro each agrees to dedicate sufficient
          ----------
employees, personnel and resources to complete the joint development activities
to performed hereunder even if such activities have not been completed by the
time Purchase Pro's full funding commitment hereunder has been utilized.

7.  Intellectual Property; Use of Platform.
    --------------------------------------

     7.1  Purchase Pro Licenses. Purchase Pro hereby grants to AOL an
          ---------------------
irrevocable, perpetual, royalty-free license to modify and incorporate and
include the Purchase Pro Technology in the Platform in connection with the
development activities to be performed by AOL and Purchase Pro hereunder. To the
extent that the Purchase Pro Technology is incorporated or included in the
Platform, Purchase Pro hereby further grants to AOL an irrevocable, perpetual,
royalty-free license to use, sublicense, distribute, reproduce, modify,

                                      -26-
<PAGE>

make derivative works based upon, and otherwise exploit the Purchase Pro
Technology in connection with AOL's use and exploitation of the Platform as
permitted hereunder. Subject to the foregoing licenses and the parties' rights
hereunder, Purchase Pro shall own all of the Purchase Pro Technology.

     7.2  iPlanet Platform Technology License. AOL hereby grants to Purchase Pro
          -----------------------------------
an irrevocable, perpetual, royalty-free license to modify and incorporate and
include the iPlanet Platform Technology in the Platform in connection with the
development activities to be performed by AOL and Purchase Pro hereunder. To the
extent  that the iPlanet Platform Technology is incorporated or included in
the Platform, AOL hereby further grants to Purchase Pro an irrevocable,
perpetual, royalty-free license to use, sublicense, distribute, reproduce,
modify, make derivative works based upon, and otherwise exploit the source and
binary code to such iPlanet Platform Technology in connection with Purchase
Pro's use and exploitation of the Platform as permitted hereunder.  Subject to
the foregoing licenses and the parties' rights hereunder, as between AOL and
Purchase Pro, AOL shall own all of the iPlanet Platform Technology.

     7.3  Private Marketplace Technology.
          ------------------------------

          (a)  Subject to the provisions of Section 4.3(g) above, with respect
               to any Purchase Pro Private Marketplace Technology that is
               designated for inclusion in the Platform, Purchase Pro hereby
               grants to AOL (i) an irrevocable, perpetual, royalty-free license
               to modify and incorporate and include in the Platform such
               Purchase Pro Private Marketplace Technology in connection with
               the development activities to be performed by AOL and Purchase
               Pro hereunder, and (ii) to the extent that such Purchase Pro
               Private Marketplace Technology is incorporated or included in the
               Platform, an irrevocable, perpetual, royalty-free license to use,
               sublicense, distribute, reproduce, modify, make derivative works
               based upon, and otherwise exploit such Purchase Pro Private
               Marketplace Technology in connection with AOL's use and
               exploitation of the Platform as permitted hereunder. Subject to
               the foregoing licenses and the parties' rights hereunder,
               Purchase Pro shall own all such Purchase Pro Private Marketplace
               Technology.

          (b)  Subject to the provisions of Section 4.3(h) above, with respect
               to any AOL Private Marketplace Technology that is designated for
               inclusion in the Platform, AOL hereby grants to Purchase Pro (i)
               an irrevocable, perpetual, royalty-free license to modify and
               incorporate and include in the Platform such AOL Private
               Marketplace Technology in connection with the development
               activities to be performed by Purchase Pro and AOL hereunder, and
               (ii) to the extent that such AOL Private Marketplace Technology
               is incorporated or included in the Platform, an irrevocable,
               perpetual, royalty-free license to use, sublicense, distribute,
               reproduce, modify, make derivative works based upon, and
               otherwise exploit such AOL Private Marketplace Technology in
               connection with Purchase Pro's use and exploitation of

                                      -27-
<PAGE>

               the Platform as permitted hereunder. Subject to the foregoing
               licenses and the parties' rights hereunder, AOL shall own all
               such AOL Private Marketplace Technology.

     7.4  Other Licenses. Purchase Pro's rights with respect to any AOL
          --------------
Technology used in connection with the Platform (including post-Term rights)
shall be as set forth in the separate license agreement(s) to be entered into
with respect such AOL Technology pursuant to Section 4.2(d) above. Subject to
such licenses, AOL shall own all of the AOL Technology. Purchase Pro's rights
with respect to the iPlanet Vortex Technology used in connection with the
Platform (including post-Term rights) shall be as set forth in the separate
license agreements to be entered into by the parties with respect to such
iPlanet Vortex Technology pursuant to Sections 4.2(f) above. Subject to such
licenses, as between AOL and Purchase Pro, AOL shall own all of the iPlanet
Vortex Technology.

     7.5  Ownership of Jointly Developed Technology. AOL and Purchase Pro shall
          -----------------------------------------
jointly own the Jointly Developed Technology and all Intellectual Property
rights relating thereto in perpetuity. In the case of any Jointly Developed
Technology that is a derivative work based upon underlying Technology owned by
Purchase Pro or AOL, the Jointly Developed Technology shall consist of the
derivative work rather than the underlying Technology upon which it is based,
and the party that owns such underlying Technology shall retain exclusive
ownership thereof, subject to the licenses granted by this Agreement. The
parties shall cooperate with respect to filing applications and registrations
for and obtaining patents, copyrights and other intellectual property protection
relating to the Jointly Developed Technology and components and elements thereof
throughout the world, all of which shall be issued in the joint names of
Purchase Pro and AOL. AOL and Purchase Pro shall each bear their own costs and
expenses of obtaining patents, copyrights or other intellectual property
protection throughout the world for the Jointly Developed Technology and the any
components or elements thereof. Each of AOL and Purchase Pro shall be entitled
to receive and retain (and shall deliver to one another) a complete set of the
source code for the Platform and all related documentation. AOL and Purchase Pro
shall consult and cooperate with one another regarding the prosecution and
defense of any claims and actions for infringement of Intellectual Property
Rights relating to the Jointly Developed Technology.

     7.6  Uses of Platform.
          ----------------

          (a)  During the Term, each of AOL and Purchase Pro shall have the
               right to use the Platform in connection with public and private
               Marketplaces and Exchanges operated by either of them, without
               restriction; provided, however, that (i) if the primary brand of
               any such Marketplace or Exchange is not the brand of either AOL
               (or any AOL designated affiliate) or Purchase Pro, then such
               Marketplace or Exchange must include ingredient branding in the
               form "powered by Netscape and Purchase Pro" or such other form as
               AOL and Purchase Pro shall mutually determine, and (ii) each
               party must comply with any applicable revenue provisions of the
               Interactive Marketing Agreement with respect to any such
               Marketplaces and Exchanges. After expiration of the Term or upon
               the earlier termination of this

                                      -28-
<PAGE>

               Agreement, each of AOL and Purchase Pro shall have the right to
               use the Platform in connection with public and private
               Marketplaces and Exchanges operated by either of them without
               restriction, even if such Marketplaces or Exchanges are not
               branded by either party, without any ingredient branding
               requirements, subject to compliance with any applicable revenue
               provisions of the Interactive Marketing Agreement with respect to
               any such Marketplaces and Exchanges. Notwithstanding the
               foregoing, Purchase Pro's rights with respect to any AOL
               Technology or iPlanet Vortex Technology used in connection with
               the Platform (including post-Term rights) shall be as set forth
               in the separate license agreement(s) to be entered into by the
               parties with respect thereto under Sections 4.2(d) and 4.2(f)
               above, respectively. Notwithstanding anything in this Section
               7.6(a), during and after the Term, both parties will have the
               right to develop and/or enable any Marketplace or Exchange for a
               third party and provide such third party an equity or revenue
               sharing interest in such Marketplace or Exchange.

          (b)  Each of AOL and Purchase Pro (and iPlanet, if designated by AOL)
               shall have the right, both during and after the Term, to license
               or sell the Platform or related Technology or Intellectual
               Property Rights to third parties for use, development and/or
               distribution in connection with the operation of Marketplaces and
               Exchanges, without restriction; provided, however, that, during
               the Term, if the primary brand of any such Marketplace or
               Exchange is not the brand of either AOL (or any AOL designated
               affiliate) or Purchase Pro, then the licensee shall be required
               to include in such Marketplace or Exchange during the Term
               ingredient branding in the form "powered by Netscape and Purchase
               Pro" or such other form as AOL and Purchase Pro shall mutually
               determine. Notwithstanding anything in this Section 7.6(b), AOL
               will not have the right to provide a Purchase Pro Competitor with
               the right to resell or distribute the Existing Purchase Pro
               Platform. Except as specifically set forth in the applicable
               license agreements, and notwithstanding the foregoing, (i)
               Purchase Pro will not have any rights to sublicense any of the
               AOL Technology, AOL Private Marketplace Technology, iPlanet
               Vortex Technology and (ii) AOL will not have any rights to
               sublicense any Purchase Pro Private Marketplace Technology. AOL
               and iPlanet (if applicable) shall each account and pay to
               Purchase Pro an amount equal to fifty percent (50%) (or such
               other percentage as the parties may mutually agree) of all gross
               revenues and other consideration actually received by AOL from
               such licenses or sales during the Term. Notwithstanding anything
               in this Section 7.6(b), during and after the Term, both parties
               will have the right to develop and/or enable any Marketplace or
               Exchange for a third party and provide such third party an equity
               or revenue sharing interest in such Marketplace or Exchange.

                                      -29-
<PAGE>

          (c)  After the Term, the parties will endeavor to take such additional
               steps as may be appropriate to ensure that the Platform
               (exclusive of the AOL Technology) remains the leading technology
               for digital marketplaces, is widely supported within the industry
               and continues to improve through robust innovation. Such
               additional steps, may include, e.g., establishing developer
               programs, participating in standards bodies, supporting open
               source development models, committing to support industry
               standards, etc.

8.  Term and Termination.
    --------------------

     8.1  Term. The term of this Agreement ("Term") shall be co-terminus with
          ----
the term of the Interactive Marketing Agreement, except as set forth in Section
13.1, and this Agreement shall terminate automatically upon expiration of the
term or the earlier termination of the Interactive Marketing Agreement.

     8.2  Termination.
          -----------

          (a)  Notwithstanding Section 8.1 above, this Agreement is subject to
               termination prior to expiration of the Term as set forth in the
               Interactive Marketing Agreement. A breach or default by Purchase
               Pro under the Interactive Marketing Agreement shall constitute a
               breach or default under this Agreement.

          (b)  Except as expressly provided elsewhere in this Agreement, either
               party may terminate this Agreement at any time in the event of a
               material breach of the Agreement by the other party which remains
               uncured after thirty (30) days written notice thereof to the
               breaching party (or such shorter period as may be specified
               elsewhere in this Agreement); provided that the cure period with
               respect to any scheduled payment will be fifteen (15) days from
               the date of such notice. Notwithstanding the foregoing, in the
               event of a material breach of a provision that expressly requires
               action to be completed within an express period shorter than
               thirty (30) days, the non-breaching party may terminate this
               Agreement if the breach remains uncured after written notice
               thereof to the breaching party.

          (c)  If this Agreement is terminated prior to completion of the
               Platform, the parties' rights to use the Platform as set forth in
               Section 7.6 shall apply to the Platform in its state of
               completion as of the date of termination.

     8.3  Post-Termination Access. Following expiration of the Term or the
          -----------------------
earlier termination of this Agreement for any reason other than a material
breach of this Agreement by AOL, subject to any applicable revenue sharing
provisions of the Interactive Marketing Agreement, at AOL's election Purchase
Pro will continue (i) to allow users of the AOL Exchange to have access to
public Marketplaces and Exchanges operated by Purchase Pro,

                                      -30-
<PAGE>

and (ii) to link and network public Marketplaces and Exchanges operated by AOL
to Marketplaces and Exchanges operated by Purchase Pro.

     8.4   Survival. Except as otherwise set forth in this Agreement, the
           --------
following provisions of this Agreement will survive termination indefinitely:
Sections 1, 7, 8, 9, 10, 11, 13 (other than Section 13.1) and 14.

9.  Representations and Warranties.
    ------------------------------

     9.1   AOL Representations and Warranties. AOL warrants, covenants and
           ----------------------------------
represents to Purchase Pro that:

           (a)  AOL has the full corporate right, power and authority to enter
                into this Agreement and to perform all acts required of it
                pursuant to this Agreement.

           (b)  The execution of this Agreement and the performance by AOL of
                its obligations and duties under this Agreement shall not
                violate any agreement to which AOL is a party or the rights of
                any other party.

           (c)  AOL is not relying on nor does Purchase Pro make any
                representations, warranties or agreements not expressly provided
                for in this Agreement.

     9.2   Purchase Pro Representations and Warranties. Purchase Pro warrants,
           -------------------------------------------
covenants and represents to AOL that:

           (a)  Purchase Pro has the full corporate right, power and authority
                to enter into this Agreement and to perform all acts required of
                it pursuant to this Agreement.

           (b)  The execution of this Agreement and the performance by Purchase
                Pro of its obligations and duties under this Agreement shall not
                violate any agreement to which Purchase Pro is a party or the
                rights of any other party.

           (c)  Purchase Pro is not relying on nor does AOL make any
                representations, warranties or agreements not expressly provided
                for in this Agreement.

     9.3   DISCLAIMER OF CERTAIN WARRANTIES. NEITHER AOL NOR PURCHASE PRO MAKES
           --------------------------------
ANY WARRANTIES TO THE OTHER WITH RESPECT TO THE OPERATION OR PERFORMANCE OF ANY
OF THE SOFTWARE DEVELOPED OR LICENSED BY EITHER PARTY TO THE OTHER PURSUANT TO
THIS AGREEMENT, AND AOL AND PURCHASE PRO EACH HEREBY DISCLAIMS ALL SUCH
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND IMPLIED
WARRANTIES OF NON-INFRINGEMENT.

                                      -31-
<PAGE>

10. Indemnification.
    ---------------

     10.1  Indemnification by AOL. AOL agrees to indemnify, defend and hold
           ----------------------
harmless Purchase Pro from and against any and all claims, damages liabilities,
losses, costs and expenses, including without limitation, reasonable outside
attorney's fees and costs, suffered or incurred by Purchase Pro arising from or
related to (a) third party claims resulting from the breach by AOL of any of its
representations, warranties or covenants hereunder, or (b) any claims that the
AOL Technology to be licensed to Purchase Pro hereunder infringes or violates
any Intellectual Property Rights or other rights of any person or entity not a
party to this Agreement.

     10.2  Indemnification by Purchase Pro. Purchase Pro agrees to indemnify,
           -------------------------------
defend and hold harmless AOL from and against any an all claims, damages
liabilities, losses, costs and expenses, including without limitation,
reasonable outside attorney's fees and costs, suffered or incurred by AOL
arising from or related to (a) third party claims resulting from the breach by
Purchase Pro of any of its representations, warranties or covenants hereunder,
or (b) any claims that the Purchase Pro Technology (and any of the Purchase Pro
Private Marketplace Technology to be licensed to AOL hereunder) infringes or
violates any Intellectual Property Rights or other rights of any person or
entity not a party to this Agreement.

     10.3  Procedure for Indemnification. Any party seeking indemnification
           -----------------------------
hereunder (an "Indemnified Party") shall give notice to the party obligated to
provide such indemnification (an "Indemnifying Party") promptly after the
Indemnified Party's receipt of notice of the commencement of any action or the
assertion of any claim by a third party that is the subject of indemnification
hereunder. Upon receipt of such notice, the Indemnifying Party shall promptly
undertake defense of such action or claim at its sole cost and expense,
including without limitation engaging legal counsel to jointly represent the
Indemnified Party and the Indemnifying Party. The Indemnified Party may elect to
engage separate counsel at its own cost and expense but the Indemnifying Party
shall control the defense or settlement of such action or claim.

11.  Limitation of Liability; Exclusion of Damages.
     ---------------------------------------------

     11.1  EXCLUSION OF DAMAGES.  NEITHER PARTY HERETO SHALL, UNDER ANY
           --------------------
CIRCUMSTANCES, BE LIABLE TO THE OTHER FOR CONSEQUENTIAL, INCIDENTAL, SPECIAL OR
EXEMPLARY DAMAGES, EVEN IF APPRISED OF THE LIKELIHOOD OF SUCH DAMAGES OCCURRING.

     11.2  LIMITATION OF LIABILITY. UNDER NO CIRCUMSTANCES SHALL EITHER PARTY'S
           -----------------------
TOTAL LIABILITY OF ALL KINDS ARISING OUT OF OR RELATED TO THIS AGREEMENT
REGARDLESS OF THE FORUM AND REGARDLESS OF WHETHER ANY ACTION OR CLAIM IS BASED
IN CONTRACT, TORT NEGLIGENCE OR OTHERWISE, EXCEED THE SUM OF FIVE MILLION
DOLLARS ($5,000,000).

     11.3  EXCEPTIONS. THE EXCLUSIONS OF DAMAGES AND LIMITATIONS OF LIABILITY
           ----------
SET FORTH IN SECTIONS 11.1 AND 11.2 SHALL NOT OPERATE TO

                                      -32-
<PAGE>

LIMIT (i) AMOUNTS ACTUALLY PAYABLE PURSUANT TO THE EXPRESS TERMS OF THIS
AGREEMENT; (ii) AMOUNTS OTHERWISE RECOVERABLE BY ONE PARTY FROM THE OTHER IN AN
ACTION AT LAW OR IN EQUITY ARISING FROM THE OTHER PARTY'S INFRINGEMENT OR
MISAPPROPRIATION OF ANY INTELLECTUAL PROPERTY RIGHTS OR OTHER PROPRIETARY RIGHTS
DURING OR AFTER THE TERM OF THIS AGREEMENT, INCLUDING WITHOUT LIMITATION
INFRINGEMENT OR MISAPPROPRIATION CLAIMS ARISING FROM THE OTHER PARTY'S BREACH OF
THIS AGREEMENT; OR (iii) CLAIMS FOR INDEMNIFICATION UNDER SECTIONS 10.1 OR 10.2
ABOVE.

12. Confidentiality.
    ---------------

     12.1  Disclosure. At all times following the date hereof, each party shall
           ----------
keep strictly confidential and not disclose, use, divulge, publish or otherwise
reveal, directly or through another person, (a) information that a party
indicates to the other party is, or that (b) the other Party reasonably should
know is, any confidential, non-public information of the other party or an
affiliate of the other party which was disclosed pursuant this Agreement, any
information that a Party indicates to the other party is, or that the other
party reasonably should know is, confidential, non-public information (i)
relating to the business of the other party and obtained as a result of the
preparation and negotiation of this Agreement, the performance by the parties of
their obligations hereunder, or the joint conduct by the parties of activities
pursuant to this Agreement or (ii) relating to the Platform, in each case
including, but not limited to, documents and/or information regarding customers,
costs, profits, markets, sales, products, product development, key personnel,
pricing policies, operational methods, technology, know-how, technical
processes, formulae, or plans for future development of or concerning the other
party or the Platform (collectively, "Confidential Information"), except as may
be necessary for  the directors, employees, agents or consultants of it and its
affiliates to perform their respective obligations under this Agreement, in
connection with the use, modification, reproduction, sale and licensing of the
Platform as permitted under this Agreement, or required under applicable law;
provided that no Party shall make any disclosure required under applicable law
before providing the applicable party with prompt written notice and a
reasonable opportunity to seek a protective order.  The parties acknowledge and
agree that this Agreement and the Interactive Marketing Agreement constitute
Confidential information of the parties hereto.

     12.2  Limitation on Use. Each party shall cause any persons receiving
           -----------------
Confidential Information in accordance with the terms hereof to retain such
Confidential Information in strict confidence. Upon termination or expiration
of this Agreement, each party shall return to the other party or destroy, as the
other party may direct in its sole discretion, all memoranda, notes, records,
reports and other documents (including all copies thereof) relating to the
Confidential Information of the other parties which such party may then possess
or have under its control. Each party shall certify in writing to the other
party within ten (10) business days of receiving instructions from the other
party regarding the return or destruction of such materials of the other party
that all such materials have been returned or destroyed as the other party has
directed. If no instruction with respect to the return or destruction of such
materials is provided to the other party within ten (10) business days of
termination or expiration, the party possessing such materials shall promptly
destroy them.

                                      -33-
<PAGE>

     12.3  Not Confidential Information. Notwithstanding anything in this
           ----------------------------
Section 12, the following shall not constitute Confidential Information: (a)
information which was already otherwise known to the recipient at the time of
its receipt in connection with this Agreement, (b) information which is or
becomes freely and generally available to the public through no wrongful act of
the recipient, (c) information which is rightfully received by the recipient
from a third party legally entitled to disclose such information without breach
by the recipient of this Agreement, or (d) information independently developed
by the recipient without use of the disclosing party's Confidential Information.

     12.4  Confidentiality Term. The above obligations with respect to
           --------------------
Confidential Information will terminate three (3) years after the expiration or
earlier termination of this Agreement.

13. Dispute Resolution; Arbitration.
    -------------------------------

     13.1  Dispute Resolution.  Each of AOL and Purchase Pro shall designate an
           ------------------
executive ("Alliance Contact Officer") who shall be primarily responsible for
overseeing the relationship between AOL and Purchase Pro, exercising approval
rights and similar matters. In the event of any claim, dispute, deadlock,
controversy or disagreement (each a "Dispute") between the parties or any of
their respective subsidiaries, affiliates, successors and assigns under or
related to this Agreement or any document executed pursuant to this Agreement or
any of the transactions contemplated hereby, such Dispute shall be submitted to
the parties' Alliance Contact Officers who shall mutually attempt to resolve
such Dispute for a period of five (5) business days. If the Alliance Contact
Officers cannot amicably resolve such Dispute within such period, the Dispute
shall be submitted to AOL's President of Interactive Services and Purchase Pro's
Chief Executive Officer who shall mutually attempt to resolve such Dispute for a
period of five (5) business days. If such parties cannot amicably resolve such
Dispute within such period, the matter will be decided by AOL's President of
Interactive Services. The decision of AOL's President of Interactive Services
shall be final and binding as to any operational matters hereunder, and any and
all matters and issues relating to product design, mutual approvals, pricing and
similar matters and issues. If as a result of such decision, the Platform and/or
the AOL Exchange will not include any feature, component or Technology that
Purchase Pro desires to include therein, Purchase Pro shall nevertheless be free
to develop and incorporate such feature, component or Technology in any
technological platform for Marketplaces or Exchanges independently developed or
created by Purchase Pro, or in any Marketplaces or Exchanges independently
operated by Purchase Pro. In addition, if Purchase Pro does not agree with the
decision reached by AOL's President of Interactive Services, Purchase Pro may
terminate this Agreement upon ninety (90) days prior written notice to AOL;
provided, however, that (i) such termination shall not result in termination of
the Interactive Marketing Agreement; (ii) if AOL and Purchase Pro are jointly
engaged hereunder in the development of any private Marketplace as of the
effective date of such termination, the joint development of such private
Marketplace shall continue until it has been completed; (iii) Purchase Pro shall
remain obligated to pay to AOL (A) any installment of the Development Fee that
remains due and payable under Section 6.1 above for the quarter in which such
termination becomes effective (and all prior quarters) and (B) the installment
of the Development Fee (if any) that is due and payable for the quarter
immediately subsequent to the quarter in which such

                                      -34-
<PAGE>

termination becomes effective; and (iv) the provisions of Section 8.2(c) shall
remain applicable.

     13.2  Arbitration. Except as provided otherwise in Section 13.1 above, all
           -----------
Disputes shall be resolved as provide in Sections 8.2 through 8.7 of the
Interactive Marketing Agreement.

14. Miscellaneous Provisions
    ------------------------

     14.1  Notices. Any notice, consent, approval, request, authorization,
           -------
direction or other communication under this Agreement ("Notice") that is
required to be given in writing will be deemed to have been delivered and given
for all purposes (i) on the delivery date if delivered by confirmed facsimile;
(ii) on the delivery date if delivered personally to the party to whom the same
is directed; (iii) one business day after deposit with a commercial overnight
carrier, with written verification of receipt; or (iv) five business days after
the mailing date, whether or not actually received, if sent by U.S. mail, return
receipt requested, postage and charges prepaid, or any other means of rapid mail
delivery for which a receipt is available. In the case of AOL, such notice will
also be deemed to have been delivered and given for all purposes on the delivery
date if delivered by electronic mail from an AOL.com email address via the U.S.
America Online brand service to screenname "AOLNotice@AOL.com. Notices shall be
addressed as follows:

                         To Purchase Pro:

                         In the case of Purchase Pro, such notice will be
                         provided to both:

                         Chief Technology Officer
                         PurchasePro.com, Inc.
                         3291 N. Buffalo Drive
                         Las Vegas, NV 89129

                         Fax no. (702) 316 - 7200

                         And

                         F. Kinsey Haffner
                         Pillsbury Madison & Sutro LLP
                         2550 Hanover Street
                         Palo Alto, CA 94304

                         Fax No. (650) 233 - 4545

                         To AOL:

                         In the case of AOL, such notice will be
                         provided to both:

                                      -35-
<PAGE>

                         President for Business Affairs
                         America Online, Inc.
                         22000 AOL Way
                         Dulles, Virginia 20166
                         Fax no. 703-265-1206

                         And

                         Deputy General Counsel
                         America Online, Inc.
                         22000 AOL Way
                         Dulles, Virginia 20166
                         Fax no. 703-265-3992

     14.2  Section 365(n) of Bankruptcy Code. All rights and licenses granted
           ---------------------------------
under or pursuant to this Agreement by Purchase Pro to AOL or by AOL to Purchase
Pro are, and shall otherwise be deemed to be, for purposes of Section 365(n) of
the United States Bankruptcy Code, 11 U.S.C. Section 101, et seq. (the
"Bankruptcy Code"), licenses of rights to "intellectual property" as defined
under Section 101(56) of the Bankruptcy Code. The parties agree that AOL and
Purchase Pro, as licensees of such rights and licenses, shall retain and may
fully exercise all of their respective rights and elections under the Bankruptcy
Code, provided such licensee party abides by the terms of this Agreement.

     14.3  Non-Exclusivity. Purchase Pro and AOL agree except for any express
           ---------------
obligations of AOL and Purchase Pro as set forth in this Agreement and the
Interactive Marketing Agreement, nothing in this Agreement is intended or shall
be construed to prohibit or restrict either AOL or Purchase Pro from developing
or acquiring products or services similar to or competitive with products or
services of the other party.

     14.4  Waiver. The waiver by either party of a breach of or a default under
           ------
any provision of this Agreement, shall not be construed as a waiver of any
subsequent breach of the same or any other provision of the Agreement, nor shall
any delay or omission on the part of either party to exercise or avail itself of
any right or remedy that it has or may have hereunder operate as a waiver of any
right or remedy. Except as expressly provided herein to the contrary, no
amendment or modification of any provision of this Agreement shall be effective
unless in writing and signed by a duly authorized signatory of Purchase Pro and
AOL.

     14.5  Costs and Expenses. Except as expressly provided herein to the
           ------------------
contrary, each party shall be responsible for its costs and expenses incurred in
connection with the negotiation and execution of this Agreement and its
performance hereunder.

     14.6  No Partnership. No agency, partnership, joint venture, or employment
           --------------
is created as a result of this Agreement and neither AOL nor AOL's agents shall
have any authority of any kind to bind Purchase Pro in any respect whatsoever,
nor shall Purchase Pro or Purchase Pro's agents have any authority of any kind
to bind AOL.

                                      -36-
<PAGE>

     14.7  Governing Law. Except as otherwise expressly provided herein, the
           -------------
Agreement will be interpreted, construed and enforced in all respects in
accordance with the laws of the state of New York except for its conflict of law
principles.

     14.8  Headings. The captions and section and paragraph headings used in
           --------
this Agreement are inserted for convenience only and shall not affect the
meaning or interpretation of this Agreement.

     14.9  Severability. If the application of any provision or provisions of
           ------------
this Agreement to any particular facts of circumstances shall be held to be
invalid or unenforceable by any court of competent jurisdiction, then: (i) the
validity and enforceability of such provision or provisions as applied to any
other particular facts or circumstances and the validity of other provisions of
this Agreement shall not in any way be affected or impaired thereby; and (ii)
such provision or provisions shall be reformed without further action by the
parties hereto and only to the extent necessary to make such provision or
provisions valid and enforceable when applied to such particular facts and
circumstances.

     14.10 Entire Agreement. This Agreement, including the attachments hereto,
           ----------------
and the Interactive Marketing Agreement and the other agreements required to be
executed and delivered thereunder, constitute the entire agreement between the
parties concerning the subject matter hereof and supersedes all proposals or
prior agreements whether oral or written, and all communications between the
parties relating to the subject matter of this Agreement and all past courses of
dealing or industry custom. In the event of any conflict between the term of
this Agreement and the terms of Exhibit A, the terms of this Agreement shall be
controlling.

     14.11 No Presumptions. No presumption shall arise in interpreting the
           ---------------
provisions of this Agreement by virtue of the role a party or its counsel played
in drafting this Agreement or any provision hereof.

     14.12 Assignment and Sublicenses. This Agreement may not be assigned by
           --------------------------
either party without the prior written consent of the other party except as set
forth in the Interactive Marketing Agreement.

     IN WITNESS WHEREOF, the Parties have executed this Agreement as of the date
first written above.

AMERICA ONLINE, INC.                    PURCHASEPRO.COM, INC.

By: ______________________              By: _______________________
Name:                                   Name:
Title:                                  Title:

                                      -37-
<PAGE>

                                   EXHIBIT A
                                   ---------

                        Hosting and Operating Standards
                        -------------------------------

1.  Exchange Infrastructure. Where Purchase Pro is required to provide Hosting
    -----------------------
    of the AOL Exchange under the Technology Development Agreement, Purchase Pro
    will be responsible for all communications, hosting and connectivity costs
    and expenses associated with the AOL Exchange and the Purchase Pro Exchange.
    Purchase Pro will provide all hardware, software, telecommunications lines
    and other infrastructure necessary to meet traffic demands on the from the
    AOL Network. Purchase Pro will design and implement the network between the
    AOL Service and AOL Exchange and/or the Purchase Pro Exchange such that (i)
    no single component failure over which Purchase Pro exercises control will
    have a materially adverse impact on AOL Users seeking to reach the AOL
    Exchange or the Purchase Pro Exchange from the AOL Network and (ii) no
    single line under material control by Purchase Pro will run at more than 70%
    average utilization for a 5-minute peak in a daily period.

2.  Optimization; Speed. Purchase Pro will use commercially reasonable efforts
    -------------------
    to ensure that: (a) the functionality and features within the AOL Exchange
    and the Purchase Pro Exchange are optimized for the client software then in
    use by AOL Members; and (b) the AOL Exchange and the Purchase Pro Exchange
    are designed and populated in a manner that minimizes delays when AOL Users
    attempt to access such site. At a minimum, Purchase Pro will ensure that the
    AOL Exchange's and the Purchase Pro Exchange's data transfers initiate
    within fewer than fifteen (15) seconds on average. Prior to commercial
    launch of any material promotions described herein, Purchase Pro will permit
    AOL to conduct performance and browser compatibility testing of the AOL
    Exchange and/or the Purchase Pro Exchange, as applicable (in person or
    through remote communications), with such commercial launch not to commence
    until such time as AOL is reasonably satisfied with the results of any such
    testing.

3.  User Interface. Purchase Pro will maintain a graphical user interface
    --------------
    within the AOL Exchange and the Purchase Pro Exchange that is competitive in
    all material respects with interfaces of other similar sites based on
    similar form technology. AOL reserves the right to review and approve the
    user interface and site design prior to launch of the AOL Exchange and to
    conduct focus group testing to assess compliance with respect to such
    consultation and with respect to Purchase Pro's compliance with the
    preceding sentence.

4.  Technical Problems. Purchase Pro agrees to use commercially reasonable
    ------------------
    efforts to address material technical problems (over which Purchase Pro
    exercises control) affecting use by users of the AOL Exchange and/or the
    Purchase Pro Exchange (a "Purchase Pro Technical Problem") promptly
    following notice thereof. In the event that Purchase Pro is unable to
    promptly resolve a Purchase Pro Technical Problem following notice thereof
    from AOL (including, without limitation, infrastructure deficiencies
    producing user delays), AOL will have the right to regulate the promotions
    it provides to Purchase Pro hereunder until such time as Purchase Pro
    corrects the Purchase Pro Technical Problem at issue.

5.  Monitoring. Purchase Pro will ensure that the performance and availability
    ----------
    of the AOL Exchange and the Purchase Pro Exchange are monitored on a
    continuous basis. Purchase Pro will provide AOL with contact information
    (including e-mail, phone, pager and fax information, as applicable, for both
    during and after business hours) for Purchase Pro's principal business and
    technical representatives, for use in cases when issues or problems arise
    with respect to the AOL Exchange and/or the Purchase Pro Exchange.

6.  Telecommunications. Where applicable, Purchase Pro will utilize encryption
    ------------------
    methodology to secure data communications between the Parties' data centers.

7.  Security. Purchase Pro will utilize Internet standard encryption
    --------
    technologies (e.g., Secure Socket Layer - SSL) to provide a secure
    environment for conducting transactions and/or transferring private AOL User
    information (e.g. credit card numbers, banking/financial information, and
    member address information) to and from the AOL Exchange and/or the Purchase
    Pro Exchange. Purchase Pro will facilitate periodic reviews of the AOL
    Exchange and the Purchase Pro Exchange by AOL in order to evaluate the
    security risks of such site. Purchase Pro will promptly remedy any security
    risks or breaches of security as may be identified by AOL's Operations
    Security team.

8. Technical Performance.
   ---------------------

   i.     Purchase Pro will design the AOL Exchange and the Purchase Pro
          Exchange to support the AOL-client embedded versions of the Microsoft
          Internet Explorer 4.XX and 5.XX browsers (Windows and Macintosh)and
          the Netscape Browser 4.XX and 6.XX versions and make commercially
          reasonable efforts to support all other AOL browsers listed at:
          "http://webmaster.info.aol.com."

                                      -38-
<PAGE>

    ii.   To the extent Purchase Pro creates customized pages on the Purchase
          Pro Exchange for AOL Members, Purchase Pro shall develop and employ a
          methodology to detect AOL Members (e.g. examine the HTTP User-Agent
          field in order to identify the "AOL Member-Agents" listed at:
          "http://webmaster. info.aol.com)."
    iii.  Purchase Pro will periodically review the technical information made
          available by AOL at http://webmaster.info.aol.com.
                              -----------------------------
    iv.   Purchase Pro will design AOL Exchange and the Purchase Pro Exchange to
          support HTTP 1.0 or 1.1 as defined in RFC 1945 and to adhere to AOL's
          parameters for refreshing or preventing the caching of information in
          AOL's proxy system as outlined in the document provided at the
          following URL:http://webmaster.info.aol.com.
                        -----------------------------
          Purchase Pro is responsible for the manipulation of these parameters
          in web-based objects so as to allow them to be cached or not cached as
          outlined in RFC 1945.
    v.    Prior to releasing material, new functionality or features through the
          AOL Exchange and/or the Purchase Pro Exchange ("New Functionality"),
          Purchase Pro will use commercially reasonable efforts to (i) test the
          New Functionality to confirm its compatibility with AOL Service client
          software and (ii) provide AOL with written notice of the New
          Functionality so that AOL can perform tests of the New Functionality
          to confirm its compatibility with the AOL Service client software.
          Should any new material, new functionality or features through the AOL
          Exchange or the Purchase Pro Exchange be released without notification
          to AOL, AOL will not be responsible for any adverse member experience
          until such time that compatibility tests can be performed and the new
          material, functionality or features qualified for the AOL Service.

                                      -39-<PAGE>
                                              CONFIDENTIAL TREATMENT REQUESTED.
                                              CONFIDENTIAL PORTIONS OF THIS
                                              DOCUMENT HAVE BEEN REDACTED AND
                                              HAVE BEEN SEPARATELY FILED WITH
                                              THE COMMISSION.

                                 Confidential
                        INTERACTIVE MARKETING AGREEMENT
                        -------------------------------

     This Interactive Marketing Agreement (the "Agreement"), dated as of March
15, 2000 (the "Effective Date"), is between America Online, Inc. ("AOL"), a
Delaware corporation, with offices at 22000 AOL Way, Dulles, Virginia 20166, and
PurchasePro.com, Inc. ("Purchase Pro"), a Nevada corporation, with offices at
3291 N. Buffalo Drive, Las Vegas Nevada 89129.  AOL and Purchase Pro may be
referred to individually as a "Party" and collectively as the "Parties."

                                 INTRODUCTION
                                 ------------

     AOL and Purchase Pro each desires to enter into an interactive marketing
relationship under which AOL will promote and distribute a jointly developed
interactive marketplace referred to and further defined herein as the "AOL
Exchange".  This relationship is further described below and is subject to the
terms and conditions set forth in this Agreement.  Defined terms  that are used
but not defined in the body of this Agreement are defined in the Schedule of
Definitions attached as Exhibit B.

     AOL and Purchase Pro are also entering into a co-development relationship
under which they will jointly develop the AOL Exchange. This relationship is set
forth in the Technology Development Agreement of the same date as this Agreement
between AOL and Purchase Pro (the "Technology Development Agreement").

                                     TERMS
                                     -----

1.   PROMOTION, DISTRIBUTION AND MARKETING.
     -------------------------------------

     1.1.  AOL Promotion of AOL Exchange. During the first two (2) years of the
           -----------------------------
           Initial Term, AOL will provide the Promotions for the AOL Exchange
           described in the carriage plan attached as Exhibit A (the "Initial
           Carriage Plan") . If AOL elects to receive the Third Year Carriage
           Payment from Purchase Pro pursuant to Section 3.2(b)(i) or if AOL
           becomes entitled to receive a payment from Purchase Pro pursuant to
           Section 3.2(b)(iii), the Parties will work together in good faith and
           mutually agree on appropriate Promotions for the third year of the
           Initial Term and set them forth in a written carriage plan (the
           "Third Year Carriage Plan"). If AOL elects to receive the Renewal
           Term Carriage Payment from Purchase Pro pursuant to Section
           3.2(c)(i), the Parties will work together in good faith and mutually
           agree on appropriate Promotions for the Renewal Term and set them
           forth in a written carriage plan (the "Renewal Term Carriage Plan").
           Subject to Purchase Pro's reasonable approval, AOL will have the
           right to fulfill its promotional commitments with respect to any of
           the foregoing by providing Purchase Pro comparable promotional
           placements in appropriate alternative areas of the AOL Network. In
           addition, if AOL is unable to deliver any particular Promotion, AOL
           will work with Purchase Pro to provide Purchase Pro, as its sole
           remedy, a comparable promotional placement. AOL reserves the right to
           redesign or modify the organization, structure, "look and feel,"
           navigation and other elements of the AOL Network at any time. In the
           event such modifications materially and adversely affect any specific
           Promotion, AOL will work with Purchase Pro to provide Purchase Pro,
           as its sole remedy, a comparable promotional placement. For the
           purposes of this Section 1.1, a "comparable" Promotion shall mean a
           Promotion (or more than one Promotion) in an alternative area or
           areas of the AOL Network which alternative area(s) receive similar or
           better levels of traffic and traffic with similar or better
           demographic characteristics.

     1.2.  Impressions Commitment.
           ----------------------

                                       1
<PAGE>

CONFIDENTIAL

     1.3.  Content of Promotions. The Promotions will link only to the AOL
           ---------------------
           Exchange. The specific Content to be contained within the Promotions
           described in the Initial Carriage Plan, the Third Year Carriage Plan,
           and the Renewal Term Carriage Plan will be determined by AOL. AOL
           will ensure that the Promotions accurately represent the AOL Exchange
           and any specific offerings of the AOL Exchange which are highlighted
           in such Promotions. Except to the extent expressly described in this
           Agreement, the specific form, placement, duration and nature of the
           Promotions will be as determined by AOL in its reasonable editorial
           discretion consistent with the editorial composition of the
           applicable screens.

     1.4.  Purchase Pro Promotion of Co-Branded Site and AOL. As set forth in
           -------------------------------------------------
           fuller detail in the Purchase Pro Cross-Promotion Plan attached as
           Exhibit C-1, during the Term Purchase Pro will promote AOL as a major
           Interactive Service partner of Purchase Pro and will promote the
           availability of the AOL Exchange through the AOL Network. In each
           case in which Purchase Pro promotes an Interactive Service other than
           AOL, it will either (a) promote AOL at least as prominently as it
           promotes any other Interactive Service within the same promotion, or
           (b) provide AOL with a separate promotion which is comparable to the
           promotion provided to the other Interactive Service.

     1.5.  Creation of AOL Exchange. Purchase Pro and AOL will jointly develop
           ------------------------
           the AOL Exchange in accordance with the terms of the Technology
           Development Agreement. In the event that the AOL Exchange is not
           available for commercial use immediately upon execution of this
           Agreement, or at any time during the Term, Purchase Pro shall allow
           AOL, at AOL's election, to promote, and distribute the pages of the
           Purchase Pro Interactive Site which Purchase Pro uses to allow a user
           to access and use, the Purchase Pro Exchange from the Effective Date
           until such time as the AOL Exchange is available for commercial use
           (e.g., not a beta test version) in accordance with the requirements
           of the Technology Development Agreement or for any other time period
           during which the AOL Exchange is not available for commercial use in
           accordance with the terms of the Technology Development Agreement,
           including,

                                       2
<PAGE>

CONFIDENTIAL

           without limitation, upon a termination or material breach of the
           Technology Development Agreement. During such time as the AOL
           Exchange is not available for commercial use, (a) all Promotions
           shall point to the Purchase Pro Exchange and all Impressions to such
           Promotions shall count toward the Impressions Commitment, (b) all AOL
           Users who register for the Purchase Pro Exchange shall be "tagged"
           and such AOL Users shall be AOL Subscribers and Registered Users, (c)
           Purchase Pro shall offer AOL Exclusive Offers to AOL Users who enter
           the Purchase Pro Exchange in accordance with Section 6.6, and (d)
           Purchase Pro shall honor within the Purchase Pro Exchange the prices,
           terms, and conditions set for the AOL Exchange in accordance with
           Section 6.2.

     1.6.  Advertising Sales in AOL Exchange. AOL will own all advertising
           ---------------------------------
           inventory, including without limitation all advertising, revenue-
           generating and promotional positions, such as sponsorships and
           premium placements, within the AOL Exchange and will have the
           exclusive right to license and/or sell all such advertising
           inventory. AOL will not sell any Advertisements within the AOL
           Exchange promoting any offerings of a Purchase Pro Competitor which
           are directly competitive with any then-current (as of the time the
           Advertisement is sold) offerings of the AOL Exchange (e.g., if the
           AOL Exchange does not offer chemical supplies, AOL may sell
           Advertisements promoting the availability of chemical supplies
           through another Exchange).

2.   PREFERRED TREATMENT.
     --------------------

     2.1.  Other Exchanges.
           ----------------

           2.1.1.   AOL may (a) create an Exchange or Marketplace for any third
                    party using the technology co-developed by the Parties
                    pursuant to the Technology Development Agreement, (b)
                    license to any third party the right to create an Exchange
                    or Marketplace using the technology co-developed by the
                    Parties pursuant to the Technology Development Agreement, or
                    (c) refer to Purchase Pro any third party with whom Purchase
                    Pro has no existing agreement to build an Exchange or
                    Marketplace or which otherwise qualifies as an AOL referral
                    in accordance with Section 2.1.2 below for Purchase Pro to
                    build an Exchange or Marketplace for such third party (each
                    Exchange or Marketplace described in (a), (b), or (c), a
                    "Third Party Exchange"). AOL will make commercially
                    reasonable efforts to display (or have displayed) in each
                    Third Party Exchange and all related extended communications
                    that mention that Third Party Exchange (e.g., press
                    releases, marketing collaterals and other promotional or
                    marketing materials, etc.), sub-branding for Purchase Pro
                    (e.g., "powered by Purchase Pro"), in accordance with
                    reasonable sub-branding guidelines provided by Purchase Pro.
                    If a third party for whom AOL or Purchase Pro builds an
                    Exchange (or who builds its own Exchange based on technology
                    licensed from AOL) refuses to include such sub-branding,
                    notwithstanding commercially reasonable efforts to the
                    contrary by AOL or Purchase Pro as applicable, , then that
                    third party's Third Party Exchange and related extended
                    communications will not be required to display such sub-
                    branding.

           2.1.2.   Except as otherwise specified on Exhibit G, any entity on
                    the list attached hereto as Exhibit G shall be treated as an
                    AOL referral for the purposes of Section 2.1.1(c). In
                    addition, AOL will provide to Purchase Pro a list of
                    entities at the end of each month which entities have been
                    referred to Purchase Pro to discuss the building of an
                    Exchange or Marketplace, and all such entities shall be
                    treated as AOL referrals for the purposes of Section
                    2.1.1(c), unless Purchase Pro notifies AOL within five (5)
                    business days of receiving a month's list from AOL that
                    Purchase Pro has a pre-existing, active relationship with
                    one or more of the entities on the list, in which case the
                    identified entity(ies) will not be treated as an AOL
                    referral. Further, in the event that AOL refers to Purchase
                    Pro an entity which is among the leaders of a vertical
                    market, which vertical market is not them served by the
                    Purchase Pro Exchange, (x) such entity shall qualify as an
                    AOL referral purposes of Section 2.1.1(c),, (y) all Vertical
                    Entities for whom Purchase Pro builds an Exchange or
                    Marketplace at any time thereafter shall be deemed AOL
                    referrals for the purposes of Section 2.1.1(c), and (z) the
                    provisions of 3.5.2 shall apply with regard to the
                    participation by any Vertical Entity in either the AOL
                    Exchange or the Purchase Pro Exchange. AOL shall be

                                       3
<PAGE>

CONFIDENTIAL

                    entitled to a sales commission in accordance with Section
                    3.5 from any and all Third Party Exchanges built by Purchase
                    Pro for all entities which qualify as AOL referrals.
                    Entities which qualify as AOL referrals in accordance with
                    this provisions shall remain AOL referrals regardless of
                    when or whether a Marketplace or Exchange is built for such
                    entities.

     2.2.  AOL Corporate Procurement. Within ninety (90) days after the
           -------------------------
           Effective Date, AOL will provide Purchase Pro with a written
           description of AOL's reasonable online procurement requirements. If
           Purchase Pro is able to meet such requirements through the AOL
           Exchange, from and after the date which is sixty (60) days after the
           AOL Exchange meets AOL's reasonable online procurement requirements,
           AOL will use the AOL Exchange as its primary online means of
           procurement from an interactive marketplace with respect to the AOL
           Properties so long as the AOL Exchange continues to meet AOL's
           procurement requirements. At any time that AOL is using the AOL
           Exchange for online procurement, Purchase Pro shall provide AOL with
           the most favorable terms then provided by Purchase Pro to any third
           party using the AOL Exchange or any Additional Purchase Pro Channel
           for similar procurement activities. The Parties acknowledge and agree
           that all Transaction Revenues generated by AOL's use of the AOL
           Exchange for procurement activities shall count toward all
           Transaction Revenue hurdles and provisions set forth in this
           Agreement. AOL will make good faith efforts to cause its suppliers
           who engage in online procurement to participate in the AOL Exchange.

     2.3.  ISP Services. In the event that Purchase Pro determines that it
           ------------
           wishes to sell or offer for free directly or in conjunction with a
           partner, Internet access to its customers as an ISP or VISP (as those
           terms are commonly understood in the Internet industry) (either as a
           standalone product or as part of a bundled offering), Purchase Pro
           shall provide AOL with written notice of its intentions and a period
           of sixty (60) days after such notice to negotiate with Purchase Pro
           to be the exclusive supplier of such Internet access. Purchase Pro
           shall not conclude any agreement with any such third party without
           offering AOL the opportunity to make a last bid to be the supplier of
           such Internet access and shall choose AOL as its Internet access
           supplier if AOL offers terms which are at least as favorable as the
           terms offered by such third party. The foregoing shall not prevent
           Purchase Pro from (i) allowing an ISP to participate as a Supplier
           in, or selling to an ISP standard advertising space within, the
           Purchase Pro Exchange or any Additional Purchase Pro Channel, or (ii)
           allowing a third party to bundle participation in the Purchase Pro
           Exchange with such third party's ISP services and at least one other
           product or service of an entity other than Purchase Pro or the third
           party ISP in a package from which Purchase Pro derives revenue solely
           for the customer's participation in the Purchase Pro Exchange.

     2.4.  Suppliers in AOL Exchange. AOL shall have the right to encourage all
           -------------------------
           of its current advertising, marketing, commerce, and other business
           partners to become suppliers in the AOL Exchange prior to such AOL
           partners being approached by Purchase Pro to become suppliers in the
           AOL Exchange or the Purchase Pro Exchange, provided that this
           sentence shall not affect any existing relationship of Purchase Pro.
           The Parties shall work together after the Effective Date to determine
           the procedures by which they reduce or eliminate or channel conflict
           in this area

3.   PAYMENTS.
     --------

     3.1.  Transaction Revenues at Beginning of the Term. During the Term,
           ---------------------------------------------
           Purchase Pro shall be entitled to one hundred percent (100%) of the
           Transaction Revenues, subject to AOL's right to certain sales
           commissions on such Transaction Revenues in accordance with this
           Section 3.1, Section 3.2(b)(ii), 3.2(c)(ii), or 3.5.2 below. From the
           second anniversary of the Effective Date, until such time as AOL
           becomes entitled to a fifty percent (50%) sales commission in
           accordance with Section 3.2, 3.3, or 3.5.2 below, AOL shall be
           entitled to a sales commission equal to twenty-five percent (25%) of
           Transaction Revenues.

     3.2.  Non-Refundable Payments and Sales Commissions During the Initial
           ----------------------------------------------------------------
           Term. Purchase Pro will pay AOL non-refundable payments as follows:
           ----

                                       4
<PAGE>

CONFIDENTIAL

          (a)  Payment #1:  A guaranteed payment of Fifty Million Dollars (US
               $50,000,000), payable as follows:

               (1)    Twenty Five Million Dollars (US $25,000,000) upon
                    execution of this Agreement;

               (ii)   Three Million Five Hundred Seventy One Thousand Four
                    Hundred Twenty-Nine Dollars (US $3,571,429) on June 30,
                    2000;

               (iii)  Three Million Five Hundred Seventy One Thousand Four
                    Hundred Twenty-Nine Dollars (US $3,571,429) on September 30,
                    2000;

               (iv)   Three Million Five Hundred Seventy One Thousand Four
                    Hundred Twenty-Nine Dollars (US $3,571,429) on December 30,
                    2000;

               (v)    Three Million Five Hundred Seventy One Thousand Four
                    Hundred Twenty-Nine Dollars (US $3,571,429) on March 31,
                    2001;

               (vi)   Three Million Five Hundred Seventy One Thousand Four
                    Hundred Twenty-Nine Dollars (US $3,571,429) on June 30,
                    2001;

               (vii)  Three Million Five Hundred Seventy One Thousand Four
                    Hundred Twenty-Nine Dollars (US $3,571,429) on September 30,
                    2001; and

               (viii) Three Million Five Hundred Seventy One Thousand Four
                    Hundred Twenty-Nine Dollars (US $3,571,429) on December 30,
                    2001.

          (b)  Payment #2:

             (i)    If, within the first two (2) years following the Effective
                    Date, the Transaction Revenue Run Rate plus Purchase Pro's
                    share of the Advertising Revenue Run Rate plus Third Party
                    Revenue Run Rate less applicable sales commissions to AOL
                    plus Vertical Entity Transaction Revenue Run Rate less
                    applicable sales commissions payable to AOL (collectively,
                    the "Purchase Pro Initial Revenues Run Rate") equal or
                    exceed One Hundred Million Dollars (US $100,000,000) (the
                    "First Revenue Run Rate Threshold"), Purchase Pro, upon
                    reaching the First Revenue Run Rate Threshold (the "Third
                    Year Payment Date") shall, at AOL's option: pay to AOL an
                    additional guaranteed payment of Twenty Five Million Dollars
                    (US $25,000,000) (the "Third Year Carriage Payment") within
                    thirty (30) days following the Third Year Payment Decision
                    Date; or

             (ii)   If, within the first two (2) years following the Effective
                    Date, Transaction Revenues plus Purchase Pro's share of
                    Advertising Revenues plus Third Party Transaction Revenue
                    less applicable sales commissions payable to AOL plus
                    Vertical Entity Transaction Revenues less applicable sales
                    commissions payable to AOL (collectively, the "Purchase Pro
                    Initial Revenues") equal or exceed One Hundred Million
                    Dollars (US $100,000,000)(the "First Revenue Threshold"),
                    and AOL did not elect to receive the Third Year Carriage
                    Payment pursuant to Section 3.2(b)(i), Purchase Pro, upon
                    reaching the First Revenue Threshold (the "Third Year
                    Revenue Achievement Date") shall thereafter pay to AOL a
                    sales commission equal to fifty percent (50%) of Transaction
                    Revenues commencing from and after the Third Year Revenue
                    Achievement Date; or

             (iii)  If, within the first two (2) years following the Effective
                    Date, the Purchase Pro Initial Revenues Run Rate is less
                    than the First Revenue Run Rate Threshold and the Purchase
                    Pro Initial Revenues are less than the First Revenue
                    Threshold, then Purchase Pro shall pay to AOL, within thirty
                    (30) days following the second anniversary of the Effective
                    Date, an additional

                                       5
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CONFIDENTIAL

                    guaranteed payment in an amount equal to: Twenty Five
                    Million Dollars (US $25,000,000) multiplied by the product
                    of the Purchase Pro Initial Revenues Run Rate during the
                    first two years after the Effective Date divided by the
                    First Revenue Run Rate Threshold. For example, if the actual
                    Purchase Pro Initial Revenues Run Rate generated during the
                    first two years after the Effective Date is $80,000,000,
                    then Purchase Pro would pay AOL $20,000,000 ($25,000,000
                    multiplied by 0.8, which is the product of the $80,000,000
                    Purchase Pro Initial Revenues Run Rate divided by the
                    $100,000,000 First Revenue Run Rate Threshold).

          (c)  Payment #3:

               (i)    If, within the first three (3) years following the
                  Effective Date, the Purchase Pro Initial Revenues Run Rate
                  equals or exceeds an amount equal to two times the total fixed
                  cash payments (not including sales commissions) made by
                  Purchase Pro to AOL pursuant to 3.2(a) and 3.2(b)(the "Second
                  Revenue Run Rate Threshold"), AOL shall elect, within forty-
                  five (45) days after the date on which the earlier of the
                  Second Revenue Run Rate Threshold is reached (the "Renewal
                  Decision Trigger Date"), whether or not to renew this
                  Agreement. If AOL elects to renew this Agreement, Purchase Pro
                  shall, at AOL's option, pay to AOL an additional guaranteed
                  payment of Twenty Five Million Dollars (US $25,000,000)(the
                  "Renewal Term Carriage Payment") within thirty (30) days
                  following the Renewal Decision Trigger Date. Notwithstanding
                  the foregoing, if AOL did not elect to receive a Twenty-Five
                  Million Dollar payment after the Third Year Payment Date, AOL
                  shall not be entitled to elect a Twenty Five Million Dollar
                  payment for the Renewal Term.; or

               (ii)   If AOL elects not to renew this Agreement within 45 days
                  after the Renewal Decision Trigger Date, or if AOL elects to
                  renew this Agreement but does not elect to receive the Renewal
                  Term Carriage Payment, AOL shall be entitled to a sales
                  commission equal to fifty percent (50%) of the Transaction
                  Revenues commencing from and after the date on which the
                  Purchase Pro Initial Revenues equals or exceeds an amount
                  equal to two times the total fixed cash payments (not
                  including sales commissions) made by Purchase Pro to AOL
                  during the (the "Second Revenue Threshold"). In such event,
                  upon reaching the Second Revenue Threshold (the "Renewal
                  Revenue Date") Purchase Pro shall thereafter pay to AOL a
                  sales commission equal to fifty percent (50%) of Transaction
                  Revenues commencing from and after the Renewal Revenue Date.
                  AOL acknowledges and agrees that if AOL elected to receive a
                  50% sales commission after the Third Year Payment Date, the
                  Second Revenue Threshold shall not entitle AOL to any
                  additional sales commission (i.e., AOL simply will continue to
                  receive the same 50% sales commission on Transaction Revenues
                  that it began receiving after the Third Year Revenue Date)

     3.3.  Transaction Revenues After the Term. After the Term, Purchase Pro
           -----------------------------------
           shall be entitled to one hundred percent (100%) of the Transaction
           Revenues generated by AOL Subscribers, subject to AOL's right to
           certain sales commissions on such Transaction Revenues in accordance
           with this Section 3.3. If during the Term AOL has earned and/or
           elected the right to receive a sales commission equal to fifty
           percent (50%) of Transaction Revenues generated by AOL Subscribers,
           AOL shall continue to be entitled to a sales commission equal to
           fifty percent (50%) of such Transaction Revenues, in perpetuity. If,
           at the end of the Term, AOL has not yet earned or elected to receive
           a fifty percent (50%) sales commission on Transaction Revenues in
           accordance with Section 3.2 , then (i) the "Third Revenue Threshold"
           shall be set at an amount equal to two times the total fixed cash
           payments (not including sales commissions) made by Purchase Pro to
           AOL during the Term plus an amount equal to ten percent (10%) thereof
           and (ii) AOL shall be entitled to a sales commission equal to fifty
           percent (50%) of Transaction Revenues generated by AOL Subscribers in
           excess of the Third Revenue Threshold amount in perpetuity,
           commencing from and after the date upon which the Purchase Pro
           Initial Revenues exceeds the Third Revenue Threshold amount (i.e.,
           the date the Third Revenue Threshold is achieved). Sections 3.7, 3.8
           and 3.9 along with the terms of Exhibit F hereto shall continue to
           apply with respect to all activities of the Parties related to
           sharing Transaction Revenues after the term. Except as otherwise
           specified in Section 5.3, AOL shall be entitled to one hundred
           percent (100%) of all Transaction Revenues not generated by AOL
           Subscribers and any

                                       6
<PAGE>

CONFIDENTIAL

           other revenues generated through the AOL Exchange by AOL Post-Term
           Subscribers after the termination or expiration of the Term.

     3.4.  Advertising Revenues. During the Term, Purchase Pro shall be entitled
           --------------------
           to one hundred percent (100%) of the Advertising Revenues generated
           from sales of Advertisements within the pages of the AOL Exchange
           other than the main banner Advertisement on each such page until such
           time as the total Purchase Pro share of the Advertising Revenues
           generated to date equals One Million Dollars (US $1,000,000)(the
           "First Advertising Trigger Date"). From the First Advertising Trigger
           Date through the date on which the total Advertising Revenues
           generated to date (including the initial $1,000,000 and including
           both AOL's and Purchase Pro's shares of Advertising Revenues
           thereafter) equals Fifteen Million Dollars (US $15,000,000)(the
           "Second Advertising Trigger Date"), Purchase Pro shall be entitled to
           seventy percent (70%) and AOL shall be entitled to thirty percent
           (30%) of the Advertising Revenues generated from sales of
           Advertisements within the pages of the AOL Exchange other than the
           main banner Advertisement on each such page. From the Second
           Advertising Trigger Date until the end of the Term, Purchase Pro
           shall be entitled to thirty percent (30%) and AOL shall be entitled
           to seventy percent (70%) of the Advertising Revenues generated from
           sales of Advertisements within the pages of the AOL Exchange other
           than the main banner Advertisement on each such page. During the
           Term, AOL shall be entitled to one hundred percent (100%) of the
           Advertising Revenues from (a) the main banner Advertisement on each
           page within the AOL Exchange and (b) any pages preceding,
           introducing, promoting or otherwise linking to the AOL Exchange.
           Purchase Pro shall not be entitled to any Advertising Revenues after
           termination or expiration of this Agreement. In the event that AOL
           does not elect to renew this Agreement for a Renewal Term, the
           advertising revenue sharing set forth in this Section shall survive
           the expiration of the Initial Term for a period of two (2) years.
           During such two year survival period (if any), AOL shall sell
           advertising inventory within the AOL Exchange in a substantially
           similar manner to the manner in which AOL sold advertising inventory
           during the third year of the Initial Term, except in the case of a
           material change in market conditions.

     3.5.  Third Party Transaction Revenues.
           ---------------------------------

           3.5.1.  During the Term, Purchase Pro shall be entitled to one
                   hundred percent (100%) of the Third Party Transaction
                   Revenues, subject to AOL's right to a sales commission equal
                   to fifty percent (50%) of all Third Party Transaction
                   Revenues, subject to the next sentence. Notwithstanding the
                   foregoing, if Purchase Pro has built a Third Party Exchange,
                   Purchase Pro shall be entitled to one hundred percent (100%)
                   of Third Party Transaction Revenues from that Third Party
                   Exchange during the Term, free of any sales commissions to
                   AOL, until such Third Party Transaction Revenues equal the
                   total actual costs incurred by Purchase Pro in building that
                   Third Party Exchange.

           3.5.2.  AOL shall be entitled to (a) a sales commission equal to
                   fifty percent (50%) of Transaction Revenues derived from the
                   participation of any Vertical Entity in the AOL Exchange
                   beginning on the date on which such Vertical Entity begins
                   its participation in the AOL Exchange (i.e., without regard
                   to any hurdles set forth herein), in perpetuity, and (b) a
                   sales commission equal to fifty percent of Vertical Entity
                   Transaction Revenues beginning on the date on which such
                   entity begins its participation in the Purchase Pro Exchange,
                   in perpetuity.

     3.6.  Late Payments; Wired Payments. All amounts owed hereunder not paid
           -----------------------------
           when due and payable will bear interest from the date such amounts
           are due and payable at the prime rate in effect at such time. All
           payments to AOL required hereunder will be paid in immediately
           available, non-refundable U.S. funds wired to the "America Online"
           account, Account Number 323070752 at The Chase Manhattan Bank, 1
           Chase Manhattan Plaza, New York, NY 10081 (ABA: 021000021). All
           payments to Purchase Pro required hereunder will be paid in
           immediately available, non-refundable U.S. funds wired to Wells
           Fargo, 3800 Howard Hughes Parkway, Las Vegas, NV 89109, Contact: Rick
           Bokum, ABA/Routing #:121000248, Account #:4588 532440, Beneficiary:
           PurchasePro.com, Inc.

                                       7
<PAGE>

CONFIDENTIAL

     3.7.  Auditing Rights.
           ---------------

           3.7.1.   Purchase Pro will maintain complete, clear and accurate
                    records of all expenses, revenues and fees in connection
                    with the performance of this Agreement. For the sole purpose
                    of ensuring compliance with this Agreement, AOL (or its
                    representative) will have the right to conduct a reasonable
                    and necessary inspection of portions of the books and
                    records of Purchase Pro which are relevant to Purchase Pro's
                    performance pursuant to this Agreement. Any such audit may
                    be conducted after 20 business days prior written notice is
                    given by AOL to Purchase Pro; provided, however, that such
                    audits may not be conducted more than once in any given
                    twelve (12) month period and the same time period may not be
                    audited more than once. The audit report and all of the
                    books and records reviewed by AOL shall be Purchase Pro's
                    Confidential Information. AOL shall bear the expense of any
                    audit conducted pursuant to this Section 3.7 unless such
                    audit shows an error in AOL's favor amounting to a
                    deficiency to AOL in excess of 5% of the actual amounts paid
                    and/or payable to it under this Agreement, in which event
                    Purchase Pro shall bear the reasonable expenses of the
                    audit. Purchase Pro shall pay AOL the amount of any
                    deficiency or AOL shall pay Purchase Pro the amount of any
                    overpayment finally determined as a result of such audit
                    within 30 days after such final determination.

           3.7.2.   AOL will maintain complete, clear and accurate records of
                    all expenses, revenues and fees in connection with the sale
                    of advertisements in the AOL Exchange. For the sole purpose
                    of ensuring compliance with this Agreement, Purchase Pro (or
                    its representative) will have the right to conduct a
                    reasonable and necessary inspection of portions of the books
                    and records of AOL which are relevant to AOL 's performance
                    pursuant to this Agreement. Any such audit may be conducted
                    after 20 business days prior written notice is given by
                    Purchase Pro to AOL; provided, however, that such audits may
                    not be conducted more than once in any given twelve (12)
                    month period and the same time period may not be audited
                    more than once. The audit report and all of the books and
                    records reviewed by Purchase Pro shall be AOL 's
                    Confidential Information. Purchase Pro shall bear the
                    expense of any audit conducted pursuant to this Section 3.7
                    unless such audit shows an error in Purchase Pro's favor
                    amounting to a deficiency to Purchase Pro in excess of 5% of
                    the actual amounts paid and/or payable to it under this
                    Agreement, in which event AOL shall bear the reasonable
                    expenses of the audit. AOL shall pay Purchase Pro the amount
                    of any deficiency or Purchase Pro shall pay AOL the amount
                    of any overpayment finally determined as a result of such
                    audit within 30 days after such final determination.

     3.8.  Taxes. Each party will collect and pay and indemnify and hold the
           -----
           other harmless from, any sales, use, excise, import or export value
           added or similar tax or duty, including any penalties and interest,
           that is applicable to its activities under this Agreement as well as
           any costs associated with the collection or withholding thereof,
           including attorneys' fees.

     3.9.  Reports.
           -------

           3.9.1.   Sales Reports. Sections 3.9.1.1 through 3.9.1.4 do not apply
                    -------------
                    until Version III (as defined in the Technology Development
                    Agreement) is deployed as part of the AOL Exchange in full
                    production mode. Prior to that time, the parties will
                    cooperate to exchange reports of information on a mutually
                    agreed basis, consistent with the need reasonably to track
                    and monitor each party's performance of this Agreement and
                    AOL's requirements to track the operation and performance of
                    the AOL Exchange and AOL Subscriber activity. Pursuant to
                    the Technology Development Agreement, the Parties will work
                    together to build systems that will allow at least the
                    following reporting, together with the ability to directly
                    access the reported data.

                    3.9.1.1.  AOL shall be entitled to a monthly report in an
                              AOL-designated and Purchase Pro-approved format,
                              detailing for the AOL Exchange (a) by category of
                              revenue and (b) by AOL Subscriber, both actual
                              Transaction Revenues earned or collected during
                              the previous month, and the Transaction Revenue
                              Run Rate for the previous month.

                                       8
<PAGE>

CONFIDENTIAL

                    3.9.1.2.  AOL shall be entitled to a monthly report in an
                              AOL-designated and Purchase Pro-approved format,
                              detailing for AOL Subscriber activity within the
                              Purchase Pro Exchange (a) by category of revenue,
                              and (b) by AOL Subscriber, both actual Transaction
                              Revenues earned or collected during the previous
                              month, and the Transaction Revenue Run Rate for
                              the previous month.

                    3.9.1.3.  In addition, each payment to be made by a Party
                              pursuant to 3.11 or 5.3 will be accompanied by a
                              report containing information, set forth by
                              category of revenue, which supports the payment,
                              including information identifying gross revenues
                              and all items deducted or excluded from gross
                              revenues to produce the Transaction Revenues,
                              Advertising Revenues, Third Party Transaction
                              Revenues, and/or Post-Term Transaction Revenues
                              with respect to which the payment is being made.

                    3.9.1.4.  During the Term, AOL will provide Purchase Pro in
                              an automated manner with a monthly report in a
                              Purchase Pro-approved format, detailing
                              Advertisements sold in the AOL Exchange during the
                              previous month, Advertising Revenues collected by
                              AOL during the previous month, and the Advertising
                              Revenue Run Rate for the previous month.

                    3.9.1.5.  At any time that the Transaction Revenue Run Rate
                              is within Ten Million Dollars (US $10,000,000) of
                              a threshold set forth in Section 3, Purchase Pro
                              shall provide AOL with a weekly report setting
                              forth the Transaction Revenue Run Rate for that
                              week.

                    3.9.1.6.  After the Term, AOL shall be entitled to a monthly
                              report in an AOL-designated and Purchase Pro-
                              approved format, detailing for AOL Post-Term
                              Subscriber activity within the Purchase Pro
                              Exchange (a) by category of revenue, and (b) by
                              AOL Post-Term Subscriber. After the Term, Purchase
                              Pro shall not be entitled to any reports regarding
                              activity within the AOL Exchange except as
                              specified in Section 3.9.1.3.

           3.9.2.   Usage Reports. During any time period for which there is a
                    -------------
                    carriage plan in accordance with Section 1.1, AOL shall
                    provide Purchase Pro with standard usage information related
                    to the Promotions and Impressions (e.g. a schedule of the
                    Impressions delivered by AOL at such time) which is similar
                    in substance and form to the reports provided by AOL to
                    other interactive marketing partners with carriage programs
                    similar to Purchase Pro. Purchase Pro acknowledges that such
                    information may be Confidential Information as defined
                    herein.

           3.9.3.   Registered User Reports. Purchase Pro shall provide AOL in
                    -----------------------
                    an automated manner with a monthly report in an AOL-
                    designated and Purchase Pro-approved format, detailing the
                    number of Registered Users during the previous month.

           3.9.4.   Ownership of Data. The Parties shall jointly own (a) all
                    -----------------
                    data and reports regarding activity within the AOL Exchange
                    during the Term and regarding activity resulting during the
                    Term in Transaction Revenues, Advertising Revenues and/or
                    Third Party Transaction Revenues, .and (b) data and reports
                    regarding AOL Subscriber activity within the Purchase Pro
                    Exchange during the Term, which reports and data shall be
                    the Confidential Information of each Party, provided that
                    Each shall be entitled to use such reports in it's business
                    operations, subject to the terms of this Agreement and all
                    applicable law, and each party shall be entitled to disclose
                    such information in aggregate form.

     3.10. Registered Users and AOL Subscribers. Each person who successfully
           ------------------------------------
           completes the registration process within the AOL Exchange will
           become a Registered User and an AOL Subscriber and will be marked
           with an AOL identifier "tag" in order to enable the proper tracking
           of Transaction Revenues.

     3.11. Party Obligated to Make Payments. At any time during or after the
           --------------------------------
           Term that this Agreement entitles the Party not collecting
           Transaction Revenues or Post-Term Transaction Revenues to retain or
           be paid a

                                       9
<PAGE>

CONFIDENTIAL

           portion of Transaction Revenues or Post-Term Transaction Revenues,
           the Party collecting Transaction Revenues or Post-Term Transaction
           Revenues (or any portion of either) shall pay the other Party the
           amount to which the other Party is entitled on a quarterly basis
           within thirty days after the end of the quarter in which such
           Transaction Revenues or Post-Term Transaction Revenues were
           generated. Any Party collecting Advertising Revenues shall pay the
           other Party any portion of such revenue to which the other Party is
           entitled on a quarterly basis within thirty days of the end of the
           quarter in which such Advertising Revenues were generated. Any Party
           collecting Third Party Transaction Revenues shall pay the other Party
           any portion of such revenue to which the other Party is entitled on a
           quarterly basis within thirty days of the end of the quarter in which
           such Third Party Transaction Revenues were generated.

4.   WARRANTS. Concurrently with the execution hereof, and as a condition
     --------
     precedent to AOL's obligations hereunder, Purchase Pro shall enter into the
     Common Stock Subscription Warrant Agreement with AOL (the "Warrant
     Agreement").

5.   TERM; RENEWAL; TERMINATION.
     --------------------------
     5.1.  Term. Unless earlier terminated as set forth herein, the initial term
           ----
           of this Agreement will be three (3) years (the "Initial Term").

     5.2.  Renewal. Upon conclusion of the Initial Term, AOL shall have the
           -------
           right to renew this Agreement for one two-year renewal term (the
           "Renewal Term") by providing written notice to Purchase Pro of AOL's
           election to renew at least ninety (90) days prior to the expiration
           of the Initial Term or as set forth in Section 3.2(c). As used in
           this Agreement, the "Term" means the Initial Term and the Renewal
           Term, if any.

     5.3.  Continued Links. Upon expiration of the Term, AOL may, at its
           ---------------
           discretion, continue to promote one or more "pointers" or links from
           the AOL Network, including, without limitation from the AOL Exchange
           or any other Marketplace or Exchange then operated by AOL, to the
           Purchase Pro Exchange (collectively, a "Continued Link"). So long as
           AOL maintains a Continued Link, (a) Purchase Pro shall pay to AOL a
           sales commission equal to fifty percent (50%) of Post-Term Purchase
           Pro Transaction Revenues, (b) AOL shall pay to Purchase Pro a sales
           commission equal to fifty percent (50%) of Post-Term AOL Transaction
           Revenues and (c) Sections 3.7, 3.8 and 3.9 along with the terms of
           Exhibit F hereto shall continue to apply with respect to the
           Continued Link and any transactions and payments arising therefrom.
           In the event that market conditions have materially changed between
           the Effective Date and the institution of the Continued Link, the
           Parties shall negotiate in good faith to determine whether a sales
           commission other than fifty percent, or a payment structure other
           than a sales commission, is appropriate.

     5.4.  Termination for Breach. Except as expressly provided elsewhere in
           ----------------------
           this Agreement, either Party may terminate this Agreement at any time
           in the event of a material breach of the Agreement by the other Party
           which remains uncured after thirty (30) days' written notice thereof
           to the other Party, or such shorter period as may be specified
           elsewhere in this Agreement. Notwithstanding the foregoing, in the
           event of a material breach of a provision that expressly requires
           action to be completed within an express period shorter than 30 days,
           either Party may terminate this Agreement if the breach remains
           uncured after written notice thereof to the other Party. In the event
           that the Technology Development Agreement is terminated while this
           Agreement remains in full force and effect, those provisions of the
           Technology Development Agreement which are specifically referenced
           herein shall survive and shall be incorporated herein by reference.

     5.5.  Termination for Bankruptcy/Insolvency. Either Party may terminate
           this Agreement immediately following written notice to the other
           Party if the other Party (i) ceases to do business in the normal
           course, (ii) becomes or is declared insolvent or bankrupt, (iii) is
           the subject of any proceeding related to its liquidation or
           insolvency (whether voluntary or involuntary) which is not dismissed
           within ninety (90) calendar days or (iv) makes an assignment for the
           benefit of creditors.

CONFIDENTIAL

                                       10
<PAGE>

     5.6. Termination on Change of Control. In the event of a Change of Control
          --------------------------------
          of Purchase Pro by an AOL Competitor, as of the first to occur of the
          date of first public announcement of such transaction, the publicly
          announced date of execution of the principal agreement for such
          transaction (e.g., a Stock Purchase Agreement or Merger Agreement
          pursuant to which such Change in Control is to be acquired) or the
          publicly announced closing date of such transaction, then AOL may
          terminate this Agreement at any time within ninety (90) days after
          such first to occur date by providing thirty (30) days prior written
          notice of such intent to terminate. If AOL terminates this Agreement
          pursuant to this Section 5.5 (a) in the first two years after the
          Effective Date, the payments set forth in Section 3.2(a) and the fixed
          payment due under clause 3.2(b)(ii) shall immediately accelerate and
          such payments shall be retained in full by AOL, (b) in the third year
          after the Effective Date, the fixed payments due in Section 3.2(b)
          shall immediately accelerate if not yet paid and such payments shall
          be retained in full by AOL, or (c) during the Renewal Term, the fixed
          payments due in the Renewal Term shall immediately accelerate if not
          yet paid and such payments shall be retained in full by AOL.

     5.7. Press Releases and Media Plan. A joint press release in substantially
          -----------------------------
          the form attached hereto as Exhibit C-3 will be issued by the Parties
          promptly after execution of this Agreement. In addition, the Parties
          agree that: (a) they will conduct one joint analyst call and one joint
          institutional investor call with respect to this Agreement as soon as
          practicable after execution of this Agreement, (b) if and at such time
          as AOL begins to use the AOL Exchange as AOL's primary source for
          online procurement, Purchase Pro may issue a press release announcing
          that AOL has chosen the AOL Exchange and the Purchase Pro solution as
          the primary means of AOL's online corporate procurement, (c) AOL will
          re-announce this Agreement and the AOL Exchange as a reasonably
          prominent part of AOL's overarching business-to-business announcement
          (currently scheduled for June 2000), and (d) the Parties may make any
          other joint announcements during the Term upon which the Parties
          mutually agree. Each Party will submit to the other Party, for its
          prior written approval, which will not be unreasonably withheld or
          delayed, any press release or any other public statement ("Press
          Release") regarding the transactions contemplated under this
          Agreement. Notwithstanding the foregoing, either Party may issue Press
          Releases and other disclosures as required by law without the consent
          of the other Party and in such event, the disclosing Party will
          provide at least five (5) business day prior written notice of such
          disclosure, or such shorter period of time as is required by law from
          the time that the disclosing party becomes aware of the required
          disclosure. The failure by one Party to obtain the prior written
          approval of the other Party prior to issuing a Press Release (except
          as required by law) shall be deemed a material breach of this
          Agreement. Because it would be difficult to precisely ascertain the
          extent of the injury caused to the non-breaching party, in the event
          of such material breach, the non-breaching party may elect to either
          (a) terminate this Agreement immediately upon notice to the other
          Party, or (b) as liquidated damages, elect to modify the Impression
          Commitment by fifteen percent (15%) (either an increase in Impressions
          if AOL has materially breached the Agreement or a decrease in
          Impressions if Purchase Pro has materially breached the Agreement).
          The Parties agree that the liquidated damages set forth are a
          reasonable approximation of the injury that would be suffered by the
          non-breaching Party.

6.   AOL EXCHANGE AND PURCHASE PRO EXCHANGE.
     ---------------------------------------

     6.1. Access from AOL Exchange to Purchase Pro Exchange. AOL shall have the
          -------------------------------------------------
          right to determine which area(s) within the Purchase Pro Exchange
          shall be accessible to AOL Users from within the AOL Exchange or
          through the Promotions or other AOL navigational tools. Purchase Pro
          shall take all steps necessary to block AOL User access to areas
          within the Purchase Pro Exchange identified by AOL as not permissible
          for AOL User access.

     6.2. Terms and Conditions. AOL shall have the right to determine the
          ---------------------
          pricing, terms and conditions related to subscriptions to the AOL
          Exchange and all other products and services offered by AOL or
          Purchase Pro or the agents of either within the AOL Exchange, provided
          that the prices, terms, and conditions set by AOL, and the pricing
          components for which charges are set by AOL, shall be competitive with
          the prices, terms, and conditions and pricing components of the five
          (5) leading Exchanges (of which one shall be the Purchase Pro
          Exchange) in the e-commerce business to business market for similar
          subscriptions,

                                       11
<PAGE>

          products and services. In any event, AOL shall have the right to
          determine subscription fees charged to high volume buyers and to SOHO
          business users in AOL's sole discretion.

     6.3. Hosting. AOL will have the right to host the AOL Exchange in
          --------
          accordance with the provisions of Sections 3.4(a) and 4.3(a) the
          Technology Development Agreement.

     6.4. User Interface; Suppliers. AOL shall have the right to design and
          --------------------------
          control the GUI, layout, design, and "look and feel" of the Phase III
          Version in accordance with Section 4.3(b) of the Technology
          Development Agreement. AOL shall have the right to control which
          Suppliers have access to the AOL Exchange and which other Exchanges or
          Marketplaces may be linked to the AOL Exchange in accordance with
          Section 4.3(d) of the Technology Development Agreement.

     6.5. Operating Standards. Purchase Pro shall ensure that the Purchase Pro
          --------------------
          Exchange and the AOL Exchange comply with the Operating Standards set
          forth in Section ___ of the Technology Development Agreement; provided
          that if AOL elects to host (or have a third party host) the AOL
          Exchange in accordance with Section 6.3 above, AOL and not Purchase
          Pro shall be responsible for ensuring that the AOL Exchange complies
          with the provisions of the Technology Development Agreement which
          would normally be performed by the Party performing hosting
          activities. To the extent standards are not established in the
          Technology Development Agreement with respect to any aspect or portion
          of the Purchase Pro Exchange or the AOL Exchange, Purchase Pro or AOL
          (as applicable) will provide such aspect or portion at a level of
          accuracy, quality, completeness, and timeliness which meets or exceeds
          prevailing standards of Exchanges in the e-commerce business-to-
          business industry. In the event Purchase Pro fails to comply with any
          material terms of this Agreement, AOL will have the right (in addition
          to any other remedies available to AOL hereunder) to decrease the
          promotion it provides to The AOL Exchange and/or the Purchase Pro
          Exchange hereunder (and to decrease or cease any other contractual
          obligation hereunder) until such time as Purchase Pro corrects its
          non-compliance (and in such event, AOL will be relieved of the
          proportionate amount of the Impressions Commitment made to Purchase
          Pro by AOL hereunder corresponding to such decrease in promotion) and
          any revenue threshold(s) set forth in Sections 3.2 and 3.3 will each
          be adjusted proportionately to correspond to such decrease in
          promotion and other obligations during the period of non-compliance.

     6.6. Exclusive Offers/Member Benefits. Purchase Pro will generally make
          --------------------------------
          available through the AOL Exchange any special or promotional offers
          generally made available by or on behalf of Purchase Pro through the
          Purchase Pro Exchange. In addition, Purchase Pro shall make available
          through the AOL Exchange on a regular and consistent basis special
          offers exclusively available to AOL Users (the "AOL Exclusive
          Offers"). In addition, the Parties may discuss opportunities to create
          additional AOL Special Offers that are designed and funded as mutually
          agreed by the Parties. The AOL Exclusive Offers made available by
          Purchase Pro, in general, shall provide a substantial member benefit
          to AOL Users, either by virtue of a meaningful price discount, product
          enhancement, unique service benefit or other special feature and may
          include AOL Exclusive Offers such as those listed on Exhibit C-2
          attached hereto. Purchase Pro will provide AOL with reasonable prior
          notice of the nature of the AOL Exclusive Offers and the commencement
          and ending dates of AOL Exclusive Offers so that AOL can market the
          availability of such AOL Exclusive Offers in the manner AOL deems
          appropriate in its editorial discretion, including, without
          limitation, inclusion of such AOL Exclusive Offers in the welcome kit
          for Netscape business users.

     6.7. Traffic Flow. Purchase Pro will implement prominent links or other
          ------------
          navigational tools from the Purchase Pro Exchange back to the AOL
          Exchange or to the AOL Properties. Purchase Pro will ensure that
          navigation back to the AOL Exchange or the AOL Properties from the
          Purchase Pro Exchange, whether through a particular pointer or link,
          the "back" button on an Internet browser, the closing of an active
          window, or any other return mechanism, shall not be interrupted by
          Purchase Pro through the use of any intermediate screen or other
          device not specifically requested by the user, including without
          limitation through the use of any html popup window or any other
          similar device.

7.   NETSCAPE TOOLS, UTILITIES AND PROGRAMMING
     -----------------------------------------

                                       12
<PAGE>

     7.1  Netscape Programming. AOL will provide Purchase Pro with content and
          --------------------
          programming targeted at its business users through co-branded areas
          (including branding and attribution using an AOL designated name or
          logo, based on mutually agreed design guideline templates and other
          co-branding requirements). Purchase Pro will integrate AOL's content
          and programming throughout the Purchase Pro web based applications and
          will provide navigational links throughout the Purchase Pro web based
          applications to the co-branded areas containing the AOL programming.
          The Parties will mutually agree upon the nature of the specific AOL
          content and programming to be integrated on the Purchase Pro web based
          applications and the carriage/integration plan for such content and
          programming on the Purchase Pro web based applications. AOL will own
          all advertising inventory in the co-branded areas described in this
          Section 7.1, and will have the exclusive right to sell such inventory.
          All pages on which such content and programming appears will be served
          from an AOL-designated domain, such as
          http://www.purchasepro. netscape.com and AOL will record the traffic
          ------------------------------------
          for auditing/reporting purposes.

     7.2  Co-Branded Instant Messenger. Purchase Pro shall prominently promote
          ----------------------------
          and distribute a co-branded version of AOL Instant Messenger through
          the Purchase Pro Exchange in accordance with the terms of an AOL
          Instant Messenger distribution agreement (the "AIM Agreement") to be
          negotiated and finalized by the Parties within thirty (30) days after
          the Effective Date until such time as AOL's new generation instant
          messaging product is available for distribution through the Purchase
          Pro Exchange. At such time as AOL's new generation instant messaging
          product is available for distribution through the Purchase Pro
          Exchange, the Parties shall execute a new distribution agreement
          relevant to that product and upon such execution, and the terms of the
          AIM Agreement attached hereto as Exhibit G shall become null and void.

     7.3  Netscape Business Directory. AOL will integrate Purchase Pro into the
          ---------------------------
          Netscape Business Directory. Purchase Pro will offer to its business
          users the opportunity to be integrated into the Netscape Business
          Directory. All such integration will be subject to all generally
          applicable terms of the Netscape Business Directory, as available
          online, except (i) as to the payment of fees by Purchase Pro and (ii)
          to the extent inconsistent with or in conflict with this Agreement.
          Purchase Pro understands and agrees that the Netscape Business
          Directory product may be structured by AOL to be provided by AOL or a
          third party, and that, if provided by a third party, AOL shall not be
          required to force such third party to accept the terms of this Section
          7.3, and Purchase Pro may not be able to so participate (but shall do
          so if requested by such third party, except (i) as to the payment of
          fees by Purchase Pro and (ii) to the extent inconsistent with or in
          conflict with this Agreement).

     7.4  Netscape Business Card. Purchase Pro will be integrated into a co-
          ----------------------
          branded Netscape Business Card (subject to all generally applicable
          terms thereof, except (i) as to the payment of fees by Purchase Pro
          and (ii) to the extent inconsistent with or in conflict with this
          Agreement). Purchase Pro will offer to its merchant partners and
          business users as an opt-in feature of any registration process on
          Purchase Pro's generally available Web site the opportunity to be
          integrated into a co-branded Netscape Business Card. Purchase Pro
          understands and agrees that the Netscape Business Card product may be
          structured by AOL to be provided by AOL or a third party, and that, if
          provided by a third party, AOL shall not be required to force such
          third party to accept the terms of this Section 7.4, and Purchase Pro
          may not be able to so participate (but shall do so if requested by
          such third party, except (i) as to the payment of fees by Purchase Pro
          and (ii) to the extent inconsistent with or in conflict with this
          Agreement).

     7.5  Netscape Browser. During the Term, Purchase Pro shall incorporate the
          ----------------
          most recent commercially released version of the Netscape browser as
          the default browser within all Purchase Pro products.

     7.6  CD Fulfillment. AOL shall produce one million (1,000,000) CD-ROMs
          --------------
          containing the client software for one of the AOL Properties (the
          specific AOL Property to be selected by AOL in its discretion) and the
          software supporting the Purchase Pro Exchange (the "Purchase Pro
          Exchange CDs") and one million (1,000,000) CD-ROMs containing the
          client software for one of the AOL Properties (the specific AOL
          Property to be selected by AOL in its discretion) and the software
          supporting the AOL Exchange (the "AOL Exchange CDs"). Purchase Pro
          shall distribute the Purchase Pro Exchange CDs in Office Depot

                                       13
<PAGE>

          retail outlets. The Parties shall mutually determine the method of
          distribution (and allocation of related costs) of the AOL Exchange
          CDs.

8.   MANAGEMENT COMMITTEE/ARBITRATION.
     --------------------------------

     8.1. Management Committee. The Parties will act in good faith and use
          --------------------
          commercially reasonable efforts to promptly resolve any claim,
          dispute, claim, controversy or disagreement (each a "Dispute") between
          the Parties or any of their respective subsidiaries, affiliates,
          successors and assigns under or related to this Agreement or any
          document executed pursuant to this Agreement or any of the
          transactions contemplated hereby. If the Parties cannot resolve the
          Dispute within such time frame, the Dispute will be submitted to the
          Management Committee for resolution. For ten (10) days following
          submission of the Dispute to the Management Committee, the Management
          Committee will have the exclusive right to resolve such Dispute;
          provided further that the Management Committee will have the final and
          exclusive right to resolve Disputes arising from any provision of the
          Agreement which expressly or implicitly provides for the Parties to
          reach mutual agreement as to certain terms. If the Management
          Committee is unable to amicably resolve the Dispute during the ten-day
          period, then the Management Committee will consider in good faith the
          possibility of retaining a third party mediator to facilitate
          resolution of the Dispute. In the event the Management Committee
          elects not to retain a mediator, the dispute will be subject to the
          resolution mechanisms described below. "Management Committee" will
          mean a two person committee made up of a senior executive from each of
          the Parties for the purpose of resolving Disputes under this Section 8
          and generally overseeing the relationship between the Parties
          contemplated by this Agreement. Neither Party will seek, nor will be
          entitled to seek, binding outside resolution of the Dispute unless and
          until the Parties have been unable amicably to resolve the Dispute as
          set forth in this Section 8 and then, only in compliance with the
          procedures set forth in this Section 8.

     8.2. Arbitration.  Except for Disputes relating to issues of proprietary
          ------------
          rights, including but not limited to intellectual property and
          confidentiality, any Dispute not resolved by amicable resolution as
          set forth in Section 8.1 will be governed exclusively and finally by
          arbitration. Such arbitration will be conducted by the American
          Arbitration Association ("AAA") in Washington, D.C. and will be
          initiated and conducted in accordance with the Commercial Arbitration
          Rules ("Commercial Rules") of the AAA, including the AAA Supplementary
          Procedures for Large Complex Commercial Disputes ("Complex
          Procedures"), as such rules will be in effect on the date of delivery
          of a demand for arbitration ("Demand"), except to the extent that such
          rules are inconsistent with the provisions set forth herein.
          Notwithstanding the foregoing, the Parties may agree in good faith
          that the Complex Procedures will not apply in order to promote the
          efficient arbitration of Disputes where the nature of the Dispute,
          including without limitation the amount in controversy, does not
          justify the application of such procedures.

     8.3. Selection of Arbitrators. The arbitration panel will consist of three
          -------------------------
          arbitrators. Each Party will name an arbitrator within ten (10) days
          after the delivery of the Demand. The two arbitrators named by the
          Parties may not be an employee or Director of the naming Party or any
          of its affiliates at the time or at any time during the preceding
          twelve months, or a consultant or contractor of the naming Party or
          any of its affiliates at the time or at any time during the preceding
          six months, but otherwise may have prior relationships with the naming
          Party which, in a judicial setting, would be considered a
          disqualifying conflict of interest. The third arbitrator, selected by
          the first two, should be a neutral participant, with no prior working
          or other relationship with either Party. If the two arbitrators are
          unable to select a third arbitrator within ten (10) days, a third
          neutral arbitrator will be appointed by the AAA from the panel of
          commercial arbitrators of any of the AAA Large and Complex Resolution
          Programs. If a vacancy in the arbitration panel occurs after the
          hearings have commenced, the remaining arbitrator or arbitrators may
          not continue with the hearing and determination of the controversy,
          unless the Parties agree otherwise.

     8.4. Governing Law. The Federal Arbitration Act, 9 U.S.C. Secs. 1-16, and
          --------------
          not state law, will govern the arbitrability of all Disputes. The
          arbitrators will allow such discovery as is appropriate to the
          purposes of arbitration in accomplishing a fair, speedy and cost-
          effective resolution of the Disputes. The arbitrators will reference
          the Federal Rules of Civil Procedure then in effect in setting the
          scope and timing of

                                       14
<PAGE>

          discovery. The Federal Rules of Evidence will apply in toto. The
          arbitrators may enter a default decision against any Party who fails
          to participate in the arbitration proceedings.

     8.5. Arbitration Awards. The arbitrators will have the authority to award
          -------------------
          compensatory damages only. Any award by the arbitrators will be
          accompanied by a written opinion setting forth the findings of fact
          and conclusions of law relied upon in reaching the decision. The award
          rendered by the arbitrators will be final, binding and non-appealable,
          and judgment upon such award may be entered by any court of competent
          jurisdiction. The Parties agree that the existence, conduct and
          content of any arbitration will be kept confidential and no Party will
          disclose to any person any information about such arbitration, except
          as may be required by law or by any governmental authority or for
          financial reporting purposes in each Party's financial statements.

     8.6. Fees. Each Party will pay the fees of its own attorneys, expenses of
          -----
          witnesses and all other expenses and costs in connection with the
          presentation of such Party's case (collectively, "Attorneys' Fees").
          The remaining costs of the arbitration, including without limitation,
          fees of the arbitrators, costs of records or transcripts and
          administrative fees (collectively, "Arbitration Costs") will be borne
          equally by the Parties. Notwithstanding the foregoing, the arbitrators
          may modify the allocation of Arbitration Costs and award Attorneys'
          Fees in those cases where fairness dictates a different allocation of
          Arbitration Costs between the Parties and an award of Attorneys' Fees
          to the prevailing Party as determined by the arbitrators.

     8.7. Non Arbitratable Disputes. Any Dispute that is not subject to final
          --------------------------
          resolution by the Management Committee or to arbitration under this
          Section 8 or by law (collectively, "Non-Arbitration Claims") will be
          brought in a court of competent jurisdiction in the State of New York.
          Each Party irrevocably consents to the exclusive jurisdiction of the
          courts of the State of New York and the federal courts situated
          therein, over any and all Non-Arbitration Claims and any and all
          actions to enforce such claims or to recover damages or other relief
          in connection with such claims.

9.   STANDARD TERMS. The Standard Online Commerce Terms & Conditions set forth
     --------------
     on Exhibit E attached hereto and Standard Legal Terms & Conditions set
     forth on Exhibit F attached hereto are each hereby made a part of this
     Agreement.

                                       15
<PAGE>

IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as of the
Effective Date.

AMERICA ONLINE, INC.                     PURCHASEPRO.COM, INC.

By: _______________________________      By: _______________________________
Name                                     Name:
Title:                                   Title:

                                       16
<PAGE>
                                              CONFIDENTIAL MATERIAL. REDACTED
                                              AND FILED SEPARATELY WITH THE
                                              COMMISSION. (2 pages redacted)

                                   EXHIBIT A

                                      17
<PAGE>

                                              CONFIDENTIAL MATERIAL. REDACTED
                                              AND FILED SEPARATELY WITH THE
                                              COMMISSION.

                                      18

<PAGE>

II.  During the Term, subject to the terms and conditions hereof, Purchase Pro
shall have the right to use the following Keyword Search Term which will link to
the Co-Branded Site:  PurchasePro.com, plus any additional keywords which are
company names, domain names, trademarks, service marks, or trade names of
Purchase Pro and which are proposed by Purchase Pro and approved by AOL
(approval not to be unreasonably withheld).

                                       19
<PAGE>

                                   EXHIBIT B

                                  Definitions
                                  -----------

The following definitions will apply to this Agreement:

Additional Purchase Pro Channel.   Any distribution channel other than the AOL
--------------------------------
Exchange through which Purchase Pro makes available an offering comparable in
nature to the AOL Exchange.

Advertising Revenues.  Aggregate cash amounts collected by AOL or its agents, as
--------------------
the case may be, arising from the license or sale of advertisements, promotions,
links or sponsorships, including without limitation placement fees
("Advertisements"), that appear within the AOL Exchange, other than classified
advertisements and slotting fees, less applicable Advertising Sales Commissions.

Advertising Revenue Run Rate.  Total Advertising Revenues as of the date on
-----------------------------
which the Advertising Run Rate is calculated plus all future amounts of
Advertising Revenues which AOL  has a bona fide and unconditional right to
collect as of the date on which the Advertising Revenue Run Rate is calculated.

Advertising Sales Commission. Actual amounts paid as commission to third party
----------------------------
agencies or actual amounts paid to AOL sales staff not to exceed ten percent
(10%) by either buyer or seller in connection with sale of the Advertisement.

AOL Competitor.  Amazon, AT&T, Ariba, Microsoft, Yahoo, and Commerce One  AOL
---------------
shall have the right to substitute one new entity to this list in place of an
existing entity once during each year of the Term after the first such year by
providing thirty (30) days advance written notice of such substitution during
such year to Purchase Pro, provided that the entity added must be an Interactive
Service and provided further that AOL shall not add an entity to this list after
Purchase Pro has disclosed to AOL that Purchase Pro is in bona fide discussions
with such party to enter into a Change of Control resulting in control of
Purchase pro by such entity (until after the suspension of such discussions if
unsuccessful).

AOL Exchange.  The Exchange to be developed and created by AOL and Purchase Pro
-------------
in accordance with the Technology Development Agreement and promoted by AOL
hereunder.

AOL Interactive Site.  Any Interactive Site which is managed, maintained, owned
--------------------
or controlled by AOL or its agents.

AOL Look and Feel.  The elements of graphics, design, organization,
------------------
presentation, layout, user interface, navigation and stylistic convention
(including the digital implementations thereof) which are generally associated
with Interactive Sites within the AOL Service or AOL.com.

AOL Member.  Any authorized user of the AOL Service, including any sub-accounts
----------
using the AOL Service under an authorized master account.

AOL Network.  (i) The AOL Service, (ii) AOL.com, (iii) CompuServe, (iv)
-----------
Netcenter, and (vi) any other product or service owned, operated, distributed or
authorized to be distributed by or through AOL or its affiliates worldwide (and
including those properties excluded from the definitions of the AOL Properties).
It is understood and agreed that the rights of Purchase Pro relate only to the
AOL Properties and the partner sites expressly identified in the Initial
Carriage Plan and not generally to the AOL Network.

AOL Post-Term Subscriber.  Any person or entity who registers within the AOL
-------------------------
Exchange after termination or expiration of the Term or enters the Purchase Pro
Exchange and exhibits an AOL "tag" after termination or expiration of the Term,
unless such person or entity is an AOL Subscriber.

AOL Properties.  AOL Service, AOL.com, CompuServe and Netcenter.
----------------

                                       20
<PAGE>

AOL Subscriber. Any person or entity who registers within the AOL Exchange
--------------
during the Term or enters the Purchase Pro Exchange and exhibits an AOL "tag"
during the Term.  Any person or entity who has previously satisfied the
definition of AOL Subscriber will remain an AOL Subscriber, and any Transaction
Revenues generated by such person or entity will be subject to this Agreement,
in perpetuity.

AOL Service. The standard narrow-band U.S. version of the America Online(R)
-----------
brand
service, specifically excluding (a) AOL.com, Netcenter or any other AOL
Interactive Site, (b) the international versions of an America Online service
(e.g., AOL Japan), (c) the CompuServe(R) brand service and any other CompuServe
products or services (d) "Driveway," "ICQ(TM)," "AOL NetFind(TM)," "AOL Instant
Messenger(TM)," "Digital City," "NetMail(TM)," "Electra", "Thrive", "Real Fans",
"Love@AOL", "Entertainment Asylum," "AOL Hometown," "My News" or any similar
independent product, service or property which may be offered by, through or
with the U.S. version of the America Online(R) brand service, (e) any
programming or Content area offered by or through the U.S. version of the
America Online(R) brand service over which AOL does not exercise complete
operational control (including, without limitation, Content areas controlled by
other parties and member-created Content areas), (f) any yellow pages, white
pages, classifieds or other search, directory or review services or Content
offered by or through the U.S. version of the America Online(R) brand service,
(g) any property, feature, product or service which AOL or its affiliates may
acquire subsequent to the Effective Date and (h) any other version of an America
Online service which is materially different from the standard narrow-band U.S.
version of the America Online brand service, by virtue of its branding,
distribution, functionality, Content or services, including, without limitation,
any co-branded version of the service or any version distributed through any
broadband distribution platform or through any platform or device other than a
desktop personal computer.

AOL User.  Any user of the AOL Service, AOL.com, CompuServe, Digital City,
--------
Netcenter, or the AOL Network.

AOL.com.  AOL's primary Internet-based Interactive Site marketed under the
-------
"AOL.COM(TM)" brand, specifically excluding (a) the AOL Service, (b) Netcenter,
(c) any international versions of such site, (d) "ICQ," "AOL NetFind(TM)," "AOL
Instant Messenger(TM)," "NetMail(TM)," "AOL Hometown," "My News" or any similar
independent product or service offered by or through such site or any other AOL
Interactive Site, (e) any programming or Content area offered by or through such
site over which AOL does not exercise complete operational control (including,
without limitation, Content areas controlled by other parties and member-created
Content areas), (f) any programming or Content area offered by or through such
site which was operated, maintained or controlled by the former AOL Studios
division (e.g., Electra), (g) any yellow pages, white pages, classifieds or
other search, directory or review services or Content offered by or through such
site or any other AOL Interactive Site, (h) any property, feature, product or
service which AOL or its affiliates may acquire subsequent to the Effective Date
and (i) any other version of an America Online Interactive Site which is
materially different from AOL's primary Internet-based Interactive Site marketed
under the "AOL.COM(TM)" brand, by virtue of its branding, distribution,
functionality, Content or services, including, without limitation, any co-
branded versions or any version distributed through any broadband distribution
platform or through any platform or device other than a desktop personal
computer.

Change of Control.  (a) The consummation of a reorganization, merger or
-----------------
consolidation or sale or other disposition of substantially all of the assets of
a party or (b) the acquisition by any individual, entity or group (within the
meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1933,
as amended) of beneficial ownership (within the meaning of Rule 13d-3
promulgated under such Act) of more than 50% of either (i) the then outstanding
shares of common stock of such party; or (ii) the combined voting power of the
then outstanding voting securities of such party entitled to vote generally in
the election of directors.

Component Products.  Any of the following products or services:  (i)
------------------
communications or community tools, products or services (e.g., instant
messaging, chat, voice-activated chat, voice message, IP telephony, e-mail,
message boards), (ii) search engines, navigation services, or
directories/listings (e.g., web search, white pages, yellow pages, member
directories, open directories), (iii) personalization services (e.g.,
homesteading/personal web publishing, calendar functions, "You've Got Pictures"
or other similar photographic services), (iv) shopping guides, decision guides,
`robots', or other similar shopping or decision aids, or (v) commerce/content
aggregation.

CompuServe.  The standard, narrow-band U.S. version of the CompuServe brand
----------
service, specifically excluding (a) any international versions of such service,
(b) any web-based service including "compuserve.com", "cserve.com" and "cs.com",
or any similar product or service offered by or through the U.S. version of the
CompuServe brand service, (c)

                                       21
<PAGE>

Content areas owned, maintained or controlled by CompuServe affiliates or any
similar "sub-service," (d) any programming or Content area offered by or through
the U.S. version of the CompuServe brand service over which CompuServe does not
exercise complete or substantially complete operational control (e.g., third-
party Content areas), (e) any yellow pages, white pages, classifieds or other
search, directory or review services or Content and (f) any co-branded or
private label branded version of the U.S. version of the CompuServe brand
service, (g) any version of the U.S. version of the CompuServe brand service
which offers Content, distribution, services and/or functionality materially
different from the Content, distribution, services and/or functionality
associated with the standard, narrow-band U.S. version of the CompuServe brand
service, including, without limitation, any version of such service distributed
through any platform or device other than a desktop personal computer and (h)
any property, feature, product or service which CompuServe or its affiliates may
acquire subsequent to the Effective Date.

Confidential Information.  Any information relating to or disclosed in the
------------------------
course of the Agreement, which is or should be reasonably understood to be
confidential or proprietary to the disclosing Party, including, but not limited
to, the material terms of this Agreement, information about AOL Members, AOL
Users, AOL Subscribers and Purchase Pro customers, technical processes and
formulas, source codes, product designs, sales, cost and other unpublished
financial information, product and business plans, projections, and marketing
data.  The foregoing definition notwithstanding, a party's confidentiality
obligations hereunder shall not apply to "Confidential Information" (a) already
lawfully known to or independently developed by the receiving Party, (b)
disclosed in published materials, (c) generally known to the public, or (d)
lawfully obtained from any third party.

Content.  Text, images, video, audio (including, without limitation, music used
-------
in synchronism or timed relation with visual displays) and other data, products,
advertisements, promotions, URLs, links, pointers and software, including any
modifications, upgrades, updates, and enhancements thereto and related
documentation.

Exchange.   An on-line aggregation of Marketplaces enabling customers to
--------
purchase, sell and otherwise procure goods and services over the Internet across
a multitude of vertical and horizontal business markets, industries and
segments.

Impression.  User exposure to the applicable Promotion, as such exposure may be
----------
reasonably determined and measured by AOL in accordance with its standard
methodologies and protocols.

Interactive Service.  An entity offering as a substantial portion of its
-------------------
business one or more of the following:  (i) online or Internet access and
connectivity services (e.g., an ISP or VISP) sold or offered for free under its
own brands or trademarks or as a product or service which another entity may
private label or co-brand; (ii) an interactive site or service competitive with
one or more of the AOL Properties and featuring a broad selection of aggregated
third party interactive text, images, video, or audio content covering a broad
range of subjects and targeted at a broad audience (e.g., a major portal or an
online service); (iii) a search and directory service that searches over a broad
range of categories of Internet websites, but not a content or e-commerce site
focused on or marketing or selling a narrow or specific selection of products or
selected subject range or targeted at a specific or selected demographic group
or a retailer focused on a specific market or vertical category, or (iv) a
license to offer to end-users through an Interactive Site communications
software capable of serving as the principal means through which a user creates,
sends and receives electronic mail or real time online messages.

Interactive Site. The aggregate pages of an interactive website or area,
----------------
including, by way of example and without limitation, (i) an Purchase Pro site on
the World Wide Web portion of the Internet or (ii) a channel or area delivered
through a "push" product such as the Pointcast Network.

Keyword Search Terms.  (a) The Keyword(TM) online search terms made available on
--------------------
the AOL Service, combining AOL's Keyword(TM) online search modifier with a term
or phrase specifically related to Purchase Pro (and determined in accordance
with the terms of this Agreement), and (b) the Go Word online search terms made
available on CompuServe, combining CompuServe's Go Word online search modifier
with a term or phrase specifically related to Purchase Pro and determined in
accordance with the terms of this Agreement).

Licensed Content.  All Content offered by Purchase Pro through the AOL Exchange
----------------
or the Purchase Pro Exchange pursuant to this Agreement or otherwise provided by
Purchase Pro or on its behalf by its agents in connection herewith

                                       22
<PAGE>

(e.g., offline or online promotional Content, Promotions, AOL "slideshows",
etc.), including in each case, any modifications, upgrades, updates,
enhancements, and related documentation.

Marketplace.   A public or private interactive on-line network for the purchase,
-----------
sale and procurement of goods and services over the Internet in a specific
business market, industry or segment, including all related service and content
offerings.

Netcenter.   Netscape's  primary Internet-based Interactive Site marketed under
---------
the "Netscape Netcenter(TM)" brand, specifically excluding (a) the AOL Service,
(b) AOL.com, (c) any international versions of such site, (d) "ICQ," "AOL
Netfind(TM)," "AOL Instant Messenger(TM)," "NetMail(TM)," "AOL Hometown," "My
News," "Digital City(TM)," or any similar independent product or service offered
by or through such site or any other AOL Interactive Site, (e) any programming
or Content area offered by or through such site over which AOL does not exercise
complete operational control (including, without limitation, Content areas
controlled by other parties and member-created Content areas), (f) any
programming or Content area offered by or through the U.S. version of the
America Online(R) brand service which was operated, maintained or controlled by
the former AOL Studios division (e.g., Electra), (g) any yellow pages, white
pages, classifieds or other search, directory or review services or Content
offered by or through such site or any other AOL Interactive Site, (h) any
property, feature, product or service which AOL or its affiliates may acquire
subsequent to the Effective Date and (i) any other version of an AOL or Netscape
Communications Corporation Interactive Site which is materially different from
Netscape Communications Corporation's primary Internet-based Interactive Site
marketed under the "Netscape Netcenter(TM)" brand, by virtue of its branding,
distribution, functionality, Content or services, including, without limitation,
any co-branded versions and any version distributed through any broadband
distribution platform or through any platform or device other than a desktop
personal computer (e.g. Custom Netcenters built specifically for third parties).

Netscape.  Netscape Communications Corporation, a wholly owned subsidiary of
--------
AOL.

Post-Term AOL Transaction Revenues.  Aggregate amounts generated in connection
----------------------------------
with access to, or products or services provided to any Purchase Pro Post-Term
Subscriber who enters the AOL Exchange from the Purchase Pro Exchange,
including, without limitation, slotting fees, classified advertising fees,
subscription fees, license fees, group buying fees, transaction processing fees,
seminar fees, administration fees, transaction fees and revenue shares payable
to AOL, but excluding amounts collected for sales or use taxes or duties (if
any), actual shipping charges paid to third parties, Advertising Revenues,
revenue shares and sales commissions payable by AOL to third parties, and actual
costs incurred by AOL in connection with operating the AOL Exchange and
providing such products and services plus ten percent of such actual costs.
Post-Term AOL Transaction revenues shall not in any event include subscription
fees paid to Purchase Pro by Purchase Pro Post-Term Subscribers.

Post-Term Purchase Pro Transaction Revenues.  Aggregate amounts generated in
-------------------------------------------
connection with access to, or products or services provided to any AOL Post-Term
Subscriber who enters the Purchase Pro Exchange from the AOL Exchange,
including, without limitation, slotting fees, classified advertising fees,
subscription fees, license fees, group buying fees, transaction processing fees,
seminar fees, administration fees, transaction fees and revenue shares payable
to Purchase Pro, but excluding amounts collected for sales or use taxes or
duties (if any), actual shipping charges paid to third parties, amounts that
would be considered Advertising Revenues if they had been collected by AOL,
revenue shares and sales commissions payable by Purchase Pro to third parties,
and actual costs incurred by Purchase Pro in connection with operating the
Purchase Pro Exchange and providing such products and services plus ten percent
of such actual costs.  Post-Term Purchase Pro Transaction revenues shall not in
any event include subscription fees paid to AOL by AOL Post-Term Subscribers.

Promotions.  The promotions described on Exhibit A, any comparable promotions
----------
delivered by AOL in accordance with Section 1.1, and any additional promotions
of the AOL Exchange provided by AOL  (including, without limitation, additional
Keyword Search Terms and other navigational tools, and any Purchase Pro
trademarks or logos or any headline, picture, story, teaser, icon, link or any
other content or service which originates from, describes or promotes Purchase
Pro).

Purchase Pro Competitor. Ariba, Commerce One, I2, Intelisys, and VerticalNet.
-----------------------
Purchase Pro shall have the right to (a) add one entity to this list during the
first year after the Effective Date by providing thirty (30) days advance
written notice to AOL of the entity to be added, provided that the entity added
must be the platform provider for  an Exchange or

                                       23
<PAGE>

Marketplace and (b) substitute one new entity to this list in place of an
existing entity once during each year of the Term after the first such year by
providing thirty (30) days advance written notice of such substitution during
such year to AOL of the entity to be added and the entity to be removed,
provided that the entity added must be the platform provider for an Exchange or
Marketplace.

Purchase Pro Interactive Site. Any Interactive Site (other than the AOL Exchange
-----------------------------
and any Purchase Pro "private marketplace") which is managed, maintained, owned
or controlled by Purchase Pro.

Purchase Pro Exchange.  Any Exchange owned, operated, or maintained by Purchase
---------------------
Pro (in whole or in part) which is accessible from the AOL Exchange either
directly or indirectly.

Purchase Pro Post-Term Subscriber.  Any person or entity who registers within
---------------------------------
the Purchase Pro Exchange, unless such person or entity is an AOL Subscriber.

Registered Users.  All persons or entities who enter the AOL Exchange or a Third
----------------
Party Exchange and pass through the registration process therefor.  Each
individual user within a legal entity (e.g., each employee of a corporation)
shall be counted as a separate Registered User.

Remnant Inventory.   Advertising inventory which is unsold at the end of the
-----------------
business day prior to the day on which that inventory will run.  If Purchase Pro
has purchased Remnant Inventory, Purchase Pro's creative will be slotted into
such unsold inventory by AOL from time to time in accordance with internal AOL
policies.  AOL does not guarantee that Remnant Inventory Impressions will be
delivered on any particular day(s) or that such Impressions will be delivered
evenly over the Term.  Further, AOL does not guarantee placement on any
particular screen or group of screens (except that Channel level Remnant
Inventory will be run only within the specified Channel).

Renewal Term.  See Section 5.2.
------------

Run of Service Inventory.  A collection of inventory made up of all areas of the
------------------------
relevant AOL property or service.  If Advertiser has purchased Run of Service
Inventory, AOL will place Advertiser's creative in different locations
throughout the relevant property or service in accordance with AOL internal
policies.  Run of Service Impressions will be delivered reasonably evenly over a
given time period.  Advertiser may not control placement within a Run of Service
Inventory purchase and AOL does not guarantee placement on any particular screen
or group of screens (except that Run of Channel Inventory will be run only in
the specified Channel).

Term.  See Section 5.1.
----

Third Party Exchange.  See Section 2.1.
--------------------

Third Party Transaction Revenues.  (a) Aggregate amounts of Purchase Pro or AOL
--------------------------------
gross revenue generated in connection with access to, or products or services
provided in connection with a Third Party Exchange, including, without
limitation, slotting fees, classified advertising fees, subscription fees,
integration fees, maintenance fees, production fees, license fees, group buying
fees, web site development fees, hosting fees, catalog building services fees,
transaction processing fees, seminar fees, administration fees, transaction fees
and revenue shares payable to Purchase Pro or AOL, but excluding amounts
collected for sales or use taxes or duties (if any), actual shipping charges
paid to third parties, Advertising Revenues  revenue shares and sales
commissions payable by Purchase Pro or AOL to third parties, and actual costs
incurred by Purchase Pro in connection with operating such Third Party Exchange
and providing such products and services plus ten percent of such actual costs;
and (b) aggregate amounts generated in connection with access to, or products or
services provided to any user who originated in a Third Party Exchange in
connection with the Purchase Pro Exchange, including, without limitation,
slotting fees, classified advertising fees, subscription fees, integration fees,
maintenance fees, production fees, license fees, group buying fees, web site
development fees, hosting fees, catalog building services fees, transaction
processing fees, seminar fees, administration fees, transaction fees and revenue
shares payable to Purchase Pro, but excluding amounts collected for sales or use
taxes or duties (if any), actual shipping charges paid to third parties, amounts
that would be considered Advertising Revenues if they had been collected by AOL,
revenue shares and sales commissions payable by Purchase Pro to third parties,
and actual costs incurred by

                                       24
<PAGE>

Purchase Pro in connection with operating such Third Party Exchange and
providing such products and services plus ten percent of such actual costs.

Third Party Transaction Revenue Run Rate.  Total Third Party Transaction
----------------------------------------
Revenues earned as of the date on which the Third Party Transaction Revenue Run
Rate is calculated plus all future amounts of Third Party Transaction Revenues
for twelve (12) months which either Party has a bona fide and unconditional
right to collect as of the date on which the Third Party Transaction Revenue Run
Rate is calculated.  Specifically, subscription revenues shall be calculated as
follows for the purposes of determining Third Party Transaction Revenue Run
Rate:  Third Party Transaction Revenue Run Rate shall include future
subscription revenues for twelve (12) months for each then-current subscriber to
the Third Party Exchange, minus one percent (1%) per month of such subscription
revenues.

Transaction Revenues.  (a) Aggregate amounts of Purchase Pro or AOL gross
--------------------
revenue generated in connection with  access to, or products or services
provided in connection with, the AOL Exchange, including, without limitation,
slotting fees, classified advertising fees, subscription fees, integration fees,
maintenance fees, production fees, license fees, group buying fees, web site
development fees, hosting fees, catalog building services fees, transaction
processing fees, seminar fees, administration fees, transaction fees and revenue
shares payable to Purchase Pro or AOL, but excluding amounts collected for sales
or use taxes or duties (if any), actual shipping charges paid to third parties,
Advertising Revenues, revenue shares and sales commissions payable by Purchase
Pro or AOL to third parties, and actual costs incurred by Purchase Pro in
connection with operating the AOL Exchange and providing such products and
services plus ten percent of such actual costs; and (b) aggregate amounts
generated in connection with access to, or products or services provided to any
AOL Subscriber in connection with the Purchase Pro Exchange, including, without
limitation, slotting fees, classified advertising fees, subscription fees,
integration fees, maintenance fees, production fees, license fees, group buying
fees, web site development fees, hosting fees, catalog building services fees,
transaction processing fees, seminar fees, administration fees, transaction fees
and revenue shares payable to Purchase Pro, but excluding amounts collected for
sales or use taxes or duties (if any), actual shipping charges paid to third
parties, amounts that would be considered Advertising Revenues if they had been
collected by AOL, revenue shares and sales commissions payable by Purchase Pro
to third parties, and actual costs incurred by Purchase Pro in connection with
operating the Purchase Pro Exchange and providing such products and services
plus ten percent of such actual costs.

Transaction Revenue Run Rate.  Total Transaction Revenues earned as of the date
----------------------------
on which the Transaction Revenue Run Rate is calculated plus all future amounts
of Transaction Revenues for twelve (12) months which either Party has a bona
fide and unconditional right to collect as of the date on which the Transaction
Revenue Run Rate is calculated.  Specifically, subscription revenues shall be
calculated as follows for the purposes of determining Transaction Revenue Run
Rate:  Transaction Revenue Run Rate shall include future subscription revenues
for twelve (12) months for each then-current AOL Subscriber, minus one percent
(1%) per month of such subscription revenues.

Vertical Entity.  Each entity doing business in a certain vertical market, in
---------------
the event that AOL refers to Purchase Pro an entity which is among the leaders
of that vertical market if that vertical market is not served by the Purchase
Pro Exchange at the time of such referral.

Vertical Entity Transaction Revenues.  Aggregate amounts of Purchase Pro or AOL
------------------------------------
gross revenue generated in connection with  access to, or products or services
provided in connection with, the Purchase Pro Exchange with regard solely to
Vertical Entities, including, without limitation, slotting fees, classified
advertising fees, subscription fees, integration fees, maintenance fees,
production fees, license fees, group buying fees, web site development fees,
hosting fees, catalog building services fees, transaction processing fees,
seminar fees, administration fees, transaction fees and revenue shares payable
to Purchase Pro or AOL, but excluding amounts collected for sales or use taxes
or duties (if any), actual shipping charges paid to third parties, amounts that
would be Advertising Revenues if collected by AOL, revenue shares and sales
commissions payable by Purchase Pro or AOL to third parties, and actual costs
incurred by Purchase Pro in connection with operating the Purchase Pro Exchange
and providing such products and services plus ten percent of such actual costs.

Vertical Entity Transaction Revenue Run Rate.  Total Vertical Entity Transaction
--------------------------------------------
Revenues earned as of the date on which the Vertical Entity Transaction Revenue
Run Rate is calculated plus all future amounts of Vertical Entity Transaction

                                       25
<PAGE>

Revenues for twelve (12) months which either Party has a bona fide and
unconditional right to collect as of the date on which the Vertical Entity
Transaction Revenue Run Rate is calculated.

                                       26
<PAGE>

                                  EXHIBIT C-1

Purchase Pro Cross-Promotion
----------------------------

A.   Within the main Purchase Pro Interactive Site which Purchase Pro uses to
     operate the Purchase Pro Exchange, Purchase Pro shall include the following
     (collectively, the "AOL Promos"): (i) a promotional banner or button (at
     least 90 x 30 pixels or 70 x 70 pixels in size) appearing "above the fold"
     on the first screen of such Purchase Pro Interactive Site, to promote the
     AOL Service in accordance with the terms of AOL's Affiliate program
     (including the payment of bounties by AOL), the terms of which can be found
     at www.affiliate.aol.com; and (ii) a "Netscape Now" feature (at least 90 x
     30 pixels or 70 x 70 pixels in size) through which users can obtain
     promotional information about Netscape products or services download or
     order the then-current version of client software for such Netscape
     products or services in accordance with the terms of the Netscape Affiliate
     program (including the payment by AOL of bounties) which can be found at
     http://www.netscape.com/affiliate/welcome.html. In addition, within such
     Purchase Pro Interactive Site, Purchase Pro shall provide prominent
     promotion for the keywords granted to Purchase Pro hereunder.

B.   In Purchase Pro's television, radio, print and "out of home" (e.g., buses
     and billboards) advertisements for the Purchase Pro Exchange and in
     articles or items featuring such Purchase Pro Exchange in publications,
     programs, features or other forms of media over which Purchase Pro
     exercises at least partial editorial control beyond mere regulation or
     approval of the use of Purchase Pro's name, logo or trademarks, Purchase
     Pro will include one or more specific references or mentions of the
     availability of the AOL Exchange through the AOL Network in the same manner
     as references to the Purchase Pro Exchange (e.g., verbal if the reference
     to the Purchase Pro Exchange is verbal), which are at least as prominent as
     any references that Purchase Pro makes to the location of the Purchase Pro
     Exchange (by way of site name, related company name, URL or otherwise), and
     will promote AOL as a major access provider in a manner at least as
     prominent as any promotion provided by Purchase Pro to any other
     Interactive Service. Without limiting the generality of the foregoing,
     Purchase Pro's listing of the "URL" for the Purchase Pro Exchange will be
     accompanied by an equally prominent listing of the "keyword" term on AOL
     for the AOL Exchange. This will be done with the following treatment:
     "America Online Keyword: PurchasePro.com" or another AOL-approved method.

C.   Upon AOL's request, the Purchase Pro Exchange shall prominently promote the
     AOL Component Products then-available through the AOL Exchange. Purchase
     Pro shall not be required to pay AOL any fees to license such AOL Component
     Products.

                                       27
<PAGE>

                                  EXHIBIT C-2

                             AOL Exclusive Offers
                             --------------------

 .    Three free months (i.e., no subscription fee) of participation in the AOL
     Exchange
 .    One Hundred Dollars ($100) "shopping certificate" (or equivalent) to spend
     on products within the AOL Exchange

                                       28
<PAGE>

                                  EXHIBIT C-3

                              Joint Press Release
                              -------------------

 AMERICA ONLINE AND PURCHASEPRO.COM JOIN FORCES IN STRATEGIC ALLIANCE TO CREATE
                             UNIVERSAL B2B EXCHANGE

    Multi-Million Dollar Development and Marketing Agreement To Create Next
             Generation E-Marketplaces For Businesses Of All Sizes

DULLES, VA and LAS VEGAS, NV (March 20, 2000) - America Online, Inc. (NYSE:
AOL), the world's leading interactive services company, and PurchasePro.com
(NASDAQ: PPRO), the leader in browser-based, business-to-business electronic
commerce, today announced a three-year strategic alliance to provide business
users of several AOL brands with a complete electronic commerce solution powered
by PurchasePro.com.  Under the agreement, the companies will co-develop future
technologies and business exchanges to better enable businesses of all sizes and
across all industries to increase sales and reduce supply costs.

     The companies will co-develop a business exchange for the millions of
business users across AOL, AOL.COM, CompuServe and Netscape Netcenter.
PurchasePro.com will power the easy-to-use, interactive marketplace with its
robust leading browser-based e-commerce solution allowing users to source, bid,
negotiate, buy and sell their products and services across multiple vertical and
horizontal business markets. The exchange interfaces will be tailored
specifically to the size and type of business. The co-branded
AOL/PurchasePro.com business marketplace is expected to roll out by the end of
second quarter 2000.

     "Our strategic alliance with PurchasePro.com will enable us to work
together to deliver the most advanced, scalable, end-to-end e-commerce solution
to businesses of all sizes," said Bob Pittman, President and Chief Operating
Officer of America Online, Inc.. "Our co-branded marketplace will deliver each
business a solution that will give them the ability to manage the electronic
buying and selling process with greater ease-of-use and convenience."

     "Together, AOL and PurchasePro.com will create the future of B2B electronic
commerce - a flexible commerce exchange platform that integrates millions of
business users across the AOL brands into a powerful mass marketplace," said
Charles E. Johnson, Chairman and CEO of PurchasePro.com. "Our relationship with
AOL further solidifies our leadership position in reaching the critical mass of
businesses with our browser-based end-to-end solution."

     "By adding the breadth of PurchasePro.com's resources to our current
business-to-business offerings, we can offer users of our key brands a complete
e-commerce solution, providing real value by saving them both time and money,"
said Jim Martin, Senior Vice President and General Manager of Netscape
Netcenter.

     AOL and PurchasePro.com will create this next generation B2B marketplace by
combining their existing, proprietary technologies with new technologies to be
co-developed and co-owned by the two companies.  The marketplace will be
entirely browser-based and will facilitate e-commerce for the smallest to the
largest of businesses.  Under terms of the agreement the companies will jointly
develop future functionality that will continue to revolutionize the B2B sector.
A blended team of AOL and PurchasePro.com product engineers will lead the
development process.

     In addition, PurchasePro.com will distribute a co-branded version of AOL
Instant Messenger (AIM) on its Web site, www.purchasepro.com, enabling
PurchasePro.com customers to easily communicate with buyers, suppliers and
others in real time.

     The AOL/PurchasePro.com business exchange will allow any sized company to
easily interact with its own suppliers, reducing purchasing costs significantly.
In addition, the marketplace will link businesses with new buyers and suppliers
to increase sales and develop new efficiencies, with every step of the buying
and selling relationships occurring online.

                                       29
<PAGE>

     Under the agreement, the two companies will share advertising and
transaction revenue and AOL will have the opportunity to earn performance-based
warrants.

About America Online, Inc.

Founded in 1985, America Online, Inc., based in Dulles, VA, is the world's
leader in interactive services, Web brands, Internet technologies and e-commerce
services.  America Online, Inc. operates two worldwide Internet services:
America Online, with more than 21 million members, and CompuServe, with more
than 2.5 million members; several leading Internet brands including ICQ, AOL
Instant Messenger and Digital City, Inc.; the Netscape Netcenter and AOL.COM
portals; the Netscape Navigator and Communicator browsers; AOL MovieFone, the
nation's No. 1 movie listing guide and ticketing service; Spinner Networks and
NullSoft, Inc., leaders in Internet music; and Digital Marketing Services, a
company specializing in online rewards programs and online market research.
Through its strategic alliance with Sun Microsystems, the company develops and
offers easy-to-deploy, end-to-end e-commerce and enterprise solutions for
companies operating in the Net Economy.

About PurchasePro.com

PurchasePro.com is a leading provider of Internet business-to-business
electronic commerce services.  The company's e-commerce solution is composed of
public and private marketplaces where businesses can buy and sell a wide range
of products and services in an efficient, competitive and cost-effective manner.
The Company has designed its e-marketplaces to meet the needs of customers and
their strategic business partners.

A key element of its strategy is to develop sales and marketing relationships,
such as those it has with IBM, Sprint Corporation, Advanstar Communications and
Office Depot, Inc.  The company provides extensive support and training
programs.  For more information, call toll-free at 888/830-4600 or in Las Vegas
at 702/316-7000.  PurchasePro.com may be accessed at its Web site,
www.purchasepro.com.

#   #   #

NOTE TO EDITORS: PurchasePro.com is a trademark of PurchasePro.com, Inc.  All
other trademarks or registered trademarks are the property of their respective
owners.

This press release includes forward looking statements which are subject to a
number of risks and uncertainties, including the risks and uncertainties
associated with rapidly changing technologies such as the Internet, the risks of
technology development and the risks of competition. Actual results could differ
materially. For more information about these risks and uncertainties, see the
SEC filings of PurchasePro.com, Inc, including the section entitled "Factors
That May Affect Results" in its 10-Q filing for the quarterly period ended
December 31, 1999 and the section entitled "Risk Factors" in its registration
statement on Form S-1/A filed on February 10, 2000 with the Securities and
Exchange Commission, which is available from the company on request and on the
Internet at the SEC's Website, www.sec.gov.

MEDIA CONTACTS:

America Online
David Theis
703-265-1491

PurchasePro.com
Anthony Timmons
(702) 316-7000
Shandwick International
Tom Tanno/Tawana Clark
(310) 785-9002

INVESTOR CONTACTS:

PurchasePro.com

                                       30
<PAGE>

Richard St. Peter, CFO
(702) 316-7000
Morgen-Walke Associates
Brooke Deterline
(415) 296-7383

                                       31
<PAGE>

                                   EXHIBIT D

                            [INTENTIONALLY DELETED]

                                       32
<PAGE>

                                   EXHIBIT E

                  Standard Online Commerce Terms & Conditions
                  -------------------------------------------

1.   Provision of Other Content. In the event that AOL notifies Purchase Pro
     --------------------------
that (i) as reasonably determined by AOL, any Content within the AOL Exchange
violates AOL's then-standard Terms of Service (as set forth on the America
Online brand service at Keyword term "TOS"), for the AOL Service or any other
AOL Property, AOL's advertising policies, or the terms of this Agreement or (ii)
AOL reasonably objects to the inclusion of any Content within the AOL Exchange
(other than any specific items of Content which may be expressly identified in
this Agreement), then Purchase Pro will take commercially reasonable steps to
block access by AOL Users to such Content using Purchase Pro's then-available
technology. In the event that Purchase Pro cannot, through its commercially
reasonable efforts, block access by AOL Users to the Content in question, then
Purchase Pro will provide AOL prompt written notice of such fact. AOL may then,
at its option, restrict access from the AOL Network to the Content in question
using technology available to AOL. Purchase Pro will cooperate with AOL's
reasonable requests to the extent AOL elects to implement any such access
restrictions.

2.   Contests.  Purchase Pro will take all steps necessary to ensure that any
     --------
contest, sweepstakes or similar promotion conducted or promoted through the AOL
Exchange (a "Contest") complies with all applicable federal, state and local
laws and regulations.

3.   Navigation.  Subject to Section 1.6 of the Agreement, AOL will be entitled
     ----------
to establish navigational icons, links and pointers connecting the AOL Exchange
(or portions thereof) with other content areas on the AOL Network. Additionally,
in cases where an AOL User performs a search for Purchase Pro through any search
or navigational tool or mechanism that is accessible or available through the
AOL Network (e.g., Promotions, Keyword Search Terms, or any other promotions or
navigational tools), AOL shall have the right to direct such AOL User to the AOL
Exchange or the Purchase Pro Exchange, or any other public Purchase Pro Exchange
or Marketplace determined by AOL in its reasonable discretion.

4.   AOL Look and Feel. Purchase Pro acknowledges and agrees that AOL will own
     -----------------
all right, title and interest in and to the elements of graphics, design,
organization, presentation, layout, user interface, navigation and stylistic
convention (including the digital implementations thereof) which are generally
associated with online areas contained within the AOL Network, subject to
Purchase Pro's ownership rights in the Platform and the Purchase Pro Exchange
and any Purchase Pro trademarks or copyrighted material within the AOL Exchange.
Purchase Pro acknowledges and agrees that AOL owns all right, title, and
interest in and to the AOL frame (and any other visible elements of client
software) appearing around the AOL Exchange or the Purchase Pro Exchange when an
AOL User is viewing such Exchange.

5.   Management of the AOL Exchange. Purchase Pro will review, delete, edit,
     ------------------------------
create, update and otherwise manage the AOL Exchange, in a timely and
professional manner and in accordance with the terms of this Agreement. The AOL
Exchange shall comply with AOL's then-current Terms of Service and any similar
then-current terms for the other AOL Properties, AOL's then-current advertising
standards, and any other standard terms which AOL chooses to implement regarding
the AOL Exchange (collectively, the "AOL Policies"). AOL shall provide Purchase
Pro with copies of, or online access to, each of the AOL Policies, and any
changes thereto, at least thirty (30) days prior to the date on which such
policies or changes become effective. Purchase Pro represents and warrants that
it will take all necessary steps to ensure that the AOL Exchange complies with
all applicable laws and regulations and the AOL Policies. AOL will have no
obligations with respect to the Content or Products available on or through the
AOL Exchange, including, but not limited to, any duty to review or monitor any
such Content or Products.

6.   Management of the Purchase Pro Exchange. Purchase Pro will review, delete,
     ---------------------------------------
edit, create, update and otherwise manage the Purchase Pro Exchange, in a timely
and professional manner and in accordance with the terms of this Agreement.
Purchase Pro represents and warrants that it will take all necessary steps to
ensure that the Purchase Pro Exchange complies with all applicable laws and
regulations.

7.   Purchase Pro Content. Purchase Pro warrants that the Licensed Content: (i)
     --------------------
will not infringe on or violate any copyright, trademark, U.S. patent or any
other third party right, including without limitation, any music performance or
other music-related rights; (ii) will not violate AOL's then-applicable Terms of
Service for the AOL Service or any other AOL Property, or AOL's ad policies; and
(iii) will not violate any applicable law or regulation, including those
relating to contests, sweepstakes or similar promotions. Additionally, Purchase
Pro represents and warrants that it owns or has a valid license to all rights to
any Licensed Content for use in AOL "slideshow" or other formats embodying
elements such as graphics, animation and sound, free and clear of all
encumbrances and without violating the rights of any other person or entity.
Except as contemplated by Section 5.7 of this Agreement, Purchase Pro shall not
in any manner state or imply that AOL recommends or endorses Purchase Pro or
Purchase Pro's Content (e.g., no statements that Purchase Pro is an "official"
or "preferred" provider of products or services for AOL).

8.   Duty to Inform. Each party will promptly inform other party of any
     --------------
information related to the AOL Exchange or the Purchase Pro Exchange which such
party believes is reasonably likely to lead to a claim, demand, or liability of
or against AOL, Purchase Pro and/or the affiliates of either by any third party.

                                       33
<PAGE>

9.   Customer Service.  Purchase Pro will be responsible for performing all
     ----------------
customer service with regard to the Purchase Pro Exchange. AOL and Purchase Pro
will each perform customer service responsibilities with regard to the AOL
Exchange in accordance with Sections 2, 3, and 4 of the Technology Development
Agreement.

10.  Overhead Accounts. To the extent AOL has granted Purchase Pro any overhead
     -----------------
accounts on the AOL Service, Purchase Pro will be responsible for the actions
taken under or through its overhead accounts, which actions are subject to AOL's
applicable Terms of Service and for any surcharges, including, without
limitation, all premium charges, transaction charges, and any applicable
communication surcharges incurred by any overhead Account issued to Purchase
Pro, but Purchase Pro will not be liable for charges incurred by any overhead
account relating to AOL's standard monthly usage fees and standard hourly
charges, which charges AOL will bear. Upon the termination of this Agreement,
all overhead accounts, related screen names and any associated usage credits or
similar rights, will automatically terminate. AOL will have no liability for
loss of any data or content related to the proper termination of any overhead
account.

11.  Navigation Tools. Any Keyword Search Terms to be directed to the AOL
     ----------------
Exchange shall be (i) subject to availability for use by Purchase Pro and (ii)
limited to the combination of the Keyword search modifier combined with a
registered trademark of Purchase Pro (e.g. "AOL keyword: XYZ Company Name"). AOL
reserves the right to revoke at any time Purchase Pro's use of any Keyword
Search Terms which do not incorporate one or more registered trademarks or
registered service marks of Purchase Pro. Purchase Pro acknowledges that its
utilization of a Keyword Search Term will not create in it, nor will it
represent it has, any right, title or interest in or to such Keyword Search
Term, other than the right, title and interest Purchase Pro holds in the company
name, domain name, trademark, service mark, trade name or other search modifier
relating to Purchase Pro that is part thereof (the "Purchase Pro Referent") when
utilized independent of the Keyword Search Term. Without limiting the generality
of the foregoing or the rights of Purchase Pro to use and/or register the
Purchase Pro Referent independent of the Keyword Search Term , (i) Purchase Pro
will not: (a) attempt to register or otherwise obtain trademark protection in
any Keyword Search Term; or (b) use any Keyword Search Term, except for the
purposes expressly required or permitted under this Agreement and (ii) AOL will
not: (a) attempt to register or otherwise obtain trademark or service mark
protection in or other registration of any Purchase Pro Referent; or (b) use any
Purchase Pro Referent, except for the purposes expressly required or permitted
under this Agreement. To the extent AOL allows AOL Users to "bookmark" the URL
or other locator for the AOL Exchange, such bookmarks will be subject to AOL's
control at all times. Upon the termination of this Agreement, Purchase Pro's
rights to any Keyword Search Terms and bookmarking will terminate (without
affecting Purchase Pro's rights in and to the Purchase Pro Referent).

12.  Merchant Certification Program. If and to the extent applicable to Purchase
     ------------------------------
Pro and the development and operation of the AOL Exchange, Purchase Pro will
participate in any generally applicable "Certified Merchant" program operated by
AOL or its authorized agents or contractors, other than with respect to the
payment of fees or inconsistent with this Agreement or the Technology Agreement.
Each Certified Merchant in good standing will be entitled to place on its
affiliated Interactive Site an AOL designed and approved button promoting the
merchant's status as an AOL Certified Merchant.

13.  Reward Programs. On the AOL Exchange, Purchase Pro shall not offer,
     ---------------
provide, implement or otherwise make available any promotional programs or plans
that are intended to provide customers with rewards or benefits in exchange for,
or on account of, their past or continued loyalty to, or patronage or purchase
of, the products or services through use of the AOL Exchange (e.g., a
promotional program similar to a "frequent flier" program), unless such
promotional program or plan is provided exclusively through AOL's "AOL Rewards"
program, accessible on the AOL Service at Keyword: "AOL Rewards."

14.  Search Terms. To the extent this Agreement sets forth any mechanism by
     ------------
which the AOL Exchange will be promoted in connection with specified search
terms within any AOL product or service, Purchase Pro hereby represents and
warrants that Purchase Pro has all consents, authorizations, approvals,
licenses, permits or other rights necessary for Purchase Pro to use such
specified search terms. Notwithstanding the foregoing, AOL shall have the right
to suspend the use of any search term if AOL has reason to believe continued use
may subject AOL to liability or other adverse consequences.

                                       34
<PAGE>

                                   EXHIBIT F

                       Standard Legal Terms & Conditions
                       ---------------------------------

1.   Promotional Materials/Press Releases.  Each Party will submit to the other
     ------------------------------------
Party, for its prior written approval, which will not be unreasonably withheld
or delayed, any marketing, advertising,  or other promotional materials,
excluding Press Releases, related to the AOL Exchange, the Purchase Pro Exchange
and/or referencing the other Party and/or its trade names, trademarks, and
service marks (the "Promotional Materials"); provided, however, that either
Party's use of screen shots of the AOL Exchange for promotional purposes will
not require the approval of the other Party so long as America Online(R) is
clearly identified as the source of such screen shots; and provided further,
however, that, following the initial public announcement of the business
relationship between the Parties in accordance with the approval and other
requirements contained herein, either Party's subsequent factual reference to
the existence of a business relationship between the Parties in Promotional
Materials,  will not require the approval of the other Party.  Each Party will
solicit and reasonably consider the views of the other Party in designing and
implementing such Promotional Materials.  Once approved, the Promotional
Materials may be used by a Party and its affiliates for the purpose of promoting
the AOL Exchange and the content contained therein and reused for such purpose
until such approval is withdrawn with reasonable prior notice.  In the event
such approval is withdrawn, existing inventories of Promotional Materials may be
depleted.

2.   License.  Subject to the other provisions of this Agreement, Purchase Pro
     -------
hereby grants AOL a non-exclusive worldwide license to market, license,
distribute, reproduce, display, perform, transmit and promote the Purchase Pro
Exchange and the Licensed Content (or any portion thereof, including, without
limitation, any Licensed Content contained within the AOL Exchange) through such
areas or features of the AOL Network as AOL deems appropriate. Purchase Pro
acknowledges and agrees that the foregoing license permits AOL to distribute
portions of the Licensed Content in synchronism or timed relation with visual
displays prepared by Purchase Pro or AOL (e.g., as part of an AOL "slideshow").
In addition, AOL Users will have the right to access and use the AOL Exchange
and the Purchase Pro Exchange upon proper registration and payment of applicable
subscription and other fees associated with such access and use.

3.   Trademark License. In designing and implementing the Materials and subject
     -----------------
to the other provisions contained herein, Purchase Pro will be entitled to use
the following trade names, trademarks, and service marks of AOL:  the "America
Online(TM)" brand service, "AOL(TM)" service/software and AOL's triangle logo;
and AOL and its affiliates will be entitled to use the trade names, trademarks,
and service marks of Purchase Pro for which Purchase Pro holds all rights
necessary for use in connection with this Agreement (collectively, together with
the AOL marks listed above, the "Marks"); provided that such Party: (i) does not
create a unitary composite mark involving a Mark of the other Party without the
prior written approval of such other Party; (ii) displays symbols and notices
clearly and sufficiently indicating the trademark status and ownership of the
other Party's Marks in accordance with applicable trademark law and practice and
(iii) complies with Section 5 of this Exhibit G.

4.   Ownership of Trademarks.  Each Party acknowledges the ownership right of
     -----------------------
the other Party in the Marks of the other Party and agrees that all use of the
other Party's Marks will inure to the benefit, and be on behalf, of the other
Party. Each Party acknowledges that its utilization of the other Party's Marks
will not create in it, nor will it represent it has, any right, title, or
interest in or to such Marks other than the licenses expressly granted herein.
Each Party agrees not to do anything contesting or impairing the trademark
rights of the other Party.

5.   Quality Standards.  Each Party agrees that the nature and quality of its
     -----------------
products and services supplied in connection with the other Party's Marks will
conform to quality standards reasonably set by the other Party.  Each Party
agrees to supply the other Party, upon request, with a reasonable number of
samples of any Materials publicly disseminated by such Party which utilize the
other Party's Marks.  Each Party will comply with all applicable laws,
regulations, and customs and obtain any required government approvals pertaining
to use of the other Party's marks.

6.   Infringement Proceedings.  Each Party agrees to promptly notify the other
     ------------------------
Party of any unauthorized use of the other Party's Marks of which it has actual
knowledge.  Each Party will have the sole right and discretion to bring
proceedings alleging infringement of its Marks or unfair competition related
thereto; provided, however, that each Party agrees to provide the other Party
with its reasonable cooperation and assistance, at the other Party's expense and
reasonable written request, with respect to any such infringement proceedings.

7.   Representations and Warranties.  Each Party represents and warrants to the
     ------------------------------
other Party that: (i) such Party has the full corporate right, power and
authority to enter into this Agreement and to perform the acts required of it
hereunder; (ii) the execution of this Agreement by such Party, and the
performance by such Party of its obligations and duties hereunder, do not and
will not violate any agreement to which such Party is a party or by which it is
otherwise bound; (iii) when executed and delivered by such Party, this Agreement
will constitute the legal, valid and binding obligation of such Party,
enforceable against such Party in accordance with its terms; and (iv) such Party
acknowledges that the other Party makes no representations, warranties or
agreements related to the subject matter hereof that are not expressly provided
for in this Agreement.

                                       35
<PAGE>

Purchase Pro hereby represents and warrants that it possesses all
authorizations, approvals, consents, licenses, permits, certificates or other
rights and permissions necessary to operate the AOL Exchange and the Purchase
Pro Exchange.

8.   Confidentiality.  Each Party acknowledges that Confidential Information may
     ---------------
be disclosed to it by the other Party during the course of this Agreement.  Each
Party agrees that it will take reasonable steps, at least substantially
equivalent to the steps it takes to protect its own proprietary information,
during the term of this Agreement, and for a period of three years following
expiration or termination of this Agreement, to prevent the duplication or
disclosure of Confidential Information of the other Party, other than by or to
its employees or agents who have a reasonable need to access and/or use such
Confidential Information to perform such Party's obligations hereunder, who will
each agree to comply with this section (either specifically or pursuant to a
general confidentiality obligation or agreement).  Notwithstanding the
foregoing, either Party may issue a press release or other disclosure containing
Confidential Information without the consent of the other Party, to the extent
such disclosure is required by law, rule, regulation or government or court
order.  In such event, the disclosing Party will provide at least five (5)
business days prior written notice of such proposed disclosure to the other
Party.  Further, in the event such disclosure is required of either Party under
the laws, rules or regulations of the Securities and Exchange Commission or any
other applicable governing body, such Party will (i) redact mutually agreed-upon
portions of this Agreement to the fullest extent permitted under applicable
laws, rules and regulations and (ii) submit a request to such governing body
that such portions and other provisions of this Agreement receive confidential
treatment under the laws, rules and regulations of the Securities and Exchange
Commission or otherwise be held in the strictest confidence to the fullest
extent permitted under the laws, rules or regulations of any other applicable
governing body.

9.   Limitation of Liability; Disclaimer; Indemnification.
     ----------------------------------------------------

9.1    Liability.  UNDER NO CIRCUMSTANCES WILL EITHER PARTY BE LIABLE TO THE
----------------
OTHER PARTY FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR EXEMPLARY
DAMAGES (EVEN IF THAT PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES), ARISING FROM BREACH OF THE AGREEMENT, THE USE OR INABILITY TO USE THE
AOL NETWORK, THE AOL SERVICE, AOL.COM, THE AOL EXCHANGE OR THE PURCHASE PRO
EXCHANGE, OR ARISING FROM ANY OTHER PROVISION OF THIS AGREEMENT, SUCH AS, BUT
NOT LIMITED TO, LOSS OF REVENUE OR ANTICIPATED PROFITS OR LOST BUSINESS
(COLLECTIVELY, "DISCLAIMED DAMAGES"); PROVIDED THAT EACH PARTY WILL REMAIN
LIABLE TO THE OTHER PARTY TO THE EXTENT ANY DISCLAIMED DAMAGES ARE CLAIMED BY A
THIRD PARTY AND ARE SUBJECT TO INDEMNIFICATION PURSUANT TO SECTION 9.3. EXCEPT
AS PROVIDED IN SECTION 9.3, (I) LIABILITY ARISING UNDER THIS AGREEMENT WILL BE
LIMITED TO DIRECT, OBJECTIVELY MEASURABLE DAMAGES, AND (II) THE MAXIMUM
LIABILITY OF ONE PARTY TO THE OTHER PARTY FOR ANY CLAIMS ARISING IN CONNECTION
WITH THIS AGREEMENT WILL NOT EXCEED THE AGGREGATE AMOUNT OF FIXED GUARANTEED
PAYMENT OBLIGATIONS OWED BY PURCHASE PRO HEREUNDER IN THE YEAR IN WHICH THE
EVENT GIVING RISE TO LIABILITY OCCURS; PROVIDED THAT EACH PARTY WILL REMAIN
LIABLE FOR THE AGGREGATE AMOUNT OF ANY PAYMENT OBLIGATIONS OWED TO THE OTHER
PARTY PURSUANT TO THE AGREEMENT.

9.2    No Additional Warranties.  EXCEPT AS EXPRESSLY SET FORTH IN THIS
-------------------------------
AGREEMENT, NEITHER PARTY MAKES ANY, AND EACH PARTY HEREBY SPECIFICALLY DISCLAIMS
ANY REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THE PURCHASE
PRO EXCHANGE, THE AOL EXCHANGE, THE AOL NETWORK OR THE AOL PROPERTIES, INCLUDING
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND
IMPLIED WARRANTIES ARISING FROM COURSE OF DEALING OR COURSE OF PERFORMANCE.
WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, EACH PARTY SPECIFICALLY
DISCLAIMS ANY WARRANTY REGARDING THE PROFITABILITY OF THE AOL EXCHANGE.
Notwithstanding the foregoing, nothing contained in this Agreement shall
restrict or limit in any way, any duty, representation, or warranty of either
Party pursuant to the Technology Development Agreement.

9.3    Indemnity.  Each Party will defend, indemnify, save and hold harmless the
----------------
other Party and the officers, directors, agents, affiliates, distributors,
franchisees and employees of the other Party from any and all third party
claims, demands, liabilities, costs or expenses, including reasonable attorneys'
fees ("Liabilities"), resulting from the indemnifying Party's material breach of
any duty, representation or warranty of this Agreement.

9.4    Claims. If a Party entitled to indemnification hereunder (the
-------------
"Indemnified Party") becomes aware of any matter it believes is indemnifiable
hereunder involving any claim, action, suit, investigation, arbitration or other
proceeding against the Indemnified Party by any third party (each an "Action"),
the Indemnified Party will give the other Party (the "Indemnifying Party")
prompt written notice of such Action. Such notice will (i) provide the basis on
which indemnification is being asserted and (ii) be accompanied by copies of all
relevant pleadings, demands, and other papers related to the Action and in the
possession of the Indemnified Party. The Indemnifying Party will have a period
of ten (10) business days after delivery of such notice to respond. If the
Indemnifying Party elects to defend the Action or does not respond within the
requisite ten (10) business day period, the Indemnifying Party will be obligated
to defend the Action, at its own expense, and by counsel reasonably satisfactory
to the Indemnified Party unless such Party disputes in good faith that it has an
obligation to Indemnify against such Action.

                                       36
<PAGE>

In the event the Indemnifying Party disputes in good faith that it has an
obligation to indemnify against such Action, the Indemnified Party shall proceed
to defend the Action until such time as the dispute is resolved in accordance
with Section 8 if this Agreement. If, upon resolution of the dispute, the
Indemnifying Party is found to have an obligation to defend the Action, the
Indemnifying Party shall promptly reimburse the Indemnified Party for all
reasonable costs incurred in defending the Action during the period of dispute
resolution. The Indemnified Party will cooperate, at the expense of the
Indemnifying Party, with the Indemnifying Party and its counsel in the defense
and the Indemnified Party will have the right to participate fully, at its own
expense, in the defense of such Action. If the Indemnifying Party responds
within the required ten (10) business day period and elects not to defend such
Action, the Indemnified Party will be free, without prejudice to any of the
Indemnified Party's rights hereunder (if any), to compromise or defend (and
control the defense of) such Action. In such case, the Indemnifying Party will
reasonably cooperate, at its own expense, unless such Party disputes in good
faith that it has an obligation to Indemnify against such Action, with the
Indemnified Party and its counsel in the defense against such Action and the
Indemnifying Party will have the right to participate fully, at its own expense,
in the defense of such Action. In the event the Indemnifying Party disputes in
good faith that it has an obligation to indemnify against such Action, the
Indemnifying Party shall reasonably cooperate at the Indemnified Party's expense
until such time as the dispute is resolved in accordance with Section 8 if this
Agreement. If, upon resolution of the dispute, the Indemnifying Party is found
to have an obligation to reasonably cooperate at it's own expense, the
Indemnifying Party shall promptly reimburse the Indemnified Party for all
reasonable costs incurred in obtaining the Indemnifying Party's cooperation
during the period of dispute resolution. Any compromise or settlement of an
Action will require the prior written consent of both Parties hereunder, such
consent not to be unreasonably withheld or delayed.

10.  Acknowledgment.  AOL and Purchase Pro each acknowledges that the
     --------------
provisions of this Agreement were negotiated to reflect an informed, voluntary
allocation between them of all risks (both known and unknown) associated with
the transactions contemplated hereunder. The limitations and disclaimers related
to warranties and liability contained in this Agreement are intended to limit
the circumstances and extent of liability. The provisions of this Section 9 will
be enforceable independent of and severable from any other enforceable or
unenforceable provision of this Agreement.

11.  Solicitation of AOL Users. During the Term and for a two year period
     -------------------------
thereafter, Purchase Pro will not use the AOL Network (including, without
limitation, the e-mail network contained therein) to solicit AOL Users on behalf
of another Interactive Service or on behalf of any Exchange or Marketplace.
Without limiting the generality of the foregoing, during the Term and for a two
year period thereafter, Purchase Pro shall not use any information obtained
pursuant to this Agreement to solicit any person or entity to participate in any
Exchange or Marketplace (as a subscriber, supplier, buyer, seller,  advertiser,
or any other type of participant) except as specifically contemplated herein.
The foregoing sentence shall not restrict Purchase Pro's activities undertaken
using information obtained other than pursuant to this Agreement.  More
generally, Purchase Pro will not send unsolicited, commercial e-mail (i.e.,
"spam") or other online communications to AOL Users through use of the AOL
Network, absent a Prior Business Relationship. For purposes of this Agreement, a
"Prior Business Relationship" will mean that the AOL User to whom commercial
e-mail or other online communication is being sent has voluntarily either (i)
engaged in a transaction with Purchase Pro or (ii) provided information to
Purchase Pro through a contest,  registration (including becoming a Registered
User), or other communication, which included reasonable notice to the AOL User
that the information provided could result in commercial e-mail or other online
communication being sent to that AOL User by Purchase Pro or its agents.  Any
commercial e-mail or other online communications to AOL Users which are
otherwise permitted hereunder, shall be subject to AOL's then-standard
restrictions on distribution of bulk e-mail (e.g., related to the time and
manner in which such e-mail can be distributed through or into the AOL product
or service in question).  Purchase Pro will provide users of the Purchase Pro
Exchange and the AOL Exchange a means to opt-out of receiving future commercial
email or other online communications, other than emails to Registered Users as
necessary for the normal operation of the Purchase Pro Exchange (e.g., monthly
billing statements from Purchase Pro).

12.  AOL User Communications.  To the extent that Purchase Pro is permitted to
     -----------------------
communicate with AOL Users under this Exhibit G, in any such communications to
AOL Users on or off the AOL Exchange (including, without limitation, e-mail
solicitations), Purchase Pro will not actively encourage AOL Users to take any
action knowingly and purposefully inconsistent with the scope and purpose of
this Agreement, including without limitation, (i) using an Exchange other than
the AOL Exchange or the Purchase Pro Exchange or any Third Party Exchange or any
Marketplace or Exchange linked or networked thereto, (ii) bookmarking of an
Interactive Site other than the AOL Exchange, or (iii) changing the default home
page on the AOL browser. Additionally, with respect to such AOL User
communications, in the event that Purchase Pro encourages an AOL User to use the
products or services of Purchase Pro through communications to an email address
or screename associated with the AOL Properties (e.g., JohnDoe@aol.com,
JohnDoe@Netscape.com, etc.), Purchase Pro shall ensure that (a) the AOL Exchange
is promoted as the primary location through which the AOL User should use such
products or services, and (b) any link to an Exchange within such communication
shall be a link to the AOL Exchange.

13.  Collection and Use of User Information.  Purchase Pro and AOL each shall
     --------------------------------------
ensure that its collection, use and disclosure of information obtained from AOL
Users under this Agreement ("User Information") complies with (i) all applicable
laws and regulations and (ii) the stricter of AOL's standard privacy policies,
available on the AOL Service at the keyword term "Privacy" or Purchase Pro's
standard privacy policies which shall be posted prominently on the Purchase Pro

                                       37
<PAGE>

Exchange.  Purchase Pro will not disclose User Information collected hereunder
to any third party in a manner that identifies AOL Users as end users of an AOL
product or service or use User Information collected under this Agreement to
market another Interactive Service. When end users are required to register to
access and use the AOL Exchange, such registration processes will be seamlessly
integrated with Netscape's "Universal Registration" or AOL's "SNAP" system (or
such other registration process developed by AOL) and be consistent with AOL's
and Purchase Pro's then-current privacy policies.  AOL and Purchase Pro will
jointly own all end user data collected by AOL or Purchase Pro in connection
with the use of the AOL Exchange, including without limitation during any
registration process thereon, and in connection with the use of the Purchase Pro
Exchange by AOL Subscribers.  Except as otherwise provided herein, neither Party
shall provide access to such data  to any third party without prior written
consent of the other Party.  Purchase Pro will have no ownership rights in any
data relating to AOL's third party partners, and Purchase Pro will not at any
time use any such data obtained by it without AOL's prior written consent other
than to the extent that Purchase Pro reasonably is required to integrate such
data into or use such data in the operation of the AOL Exchange or other
functionality expressly designated by AOL.

14.  Excuse.  Neither Party will be liable for, or be considered in breach of or
     ------
default under this Agreement on account of, any delay or failure to perform as
required by this Agreement as a result of any causes or conditions which are
beyond such Party's reasonable control and which such Party is unable to
overcome by the exercise of reasonable diligence.

15.  Independent Contractors.  The Parties to this Agreement are independent
     -----------------------
contractors.  Neither Party is an agent, representative or employee of the other
Party.  Neither Party will have any right, power or authority to enter into any
agreement for or on behalf of, or incur any obligation or liability of, or to
otherwise bind, the other Party.  This Agreement will not be interpreted or
construed to create an association, agency, joint venture or partnership between
the Parties or to impose any liability attributable to such a relationship upon
either Party.

16.  Notice.  Any notice, approval, request, authorization, direction or other
     ------
communication under this Agreement will be given in writing and will be deemed
to have been delivered and given for all purposes (i) on the delivery date if
delivered by electronic mail on the AOL Network (to screenname
"AOLNotice@AOL.com" in the case of AOL) or by confirmed facsimile; (ii) on the
delivery date if delivered personally to the Party to whom the same is directed;
(iii) one business day after deposit with a commercial overnight carrier, with
written verification of receipt; or (iv) five business days after the mailing
date, whether or not actually received, if sent by U.S. mail, return receipt
requested, postage and charges prepaid, or any other means of rapid mail
delivery for which a receipt is available.  In the case of AOL, such notice will
be provided to both the Senior Vice President for Business Affairs (fax no. 703-
265-1206) and the Deputy General Counsel (fax no. 703-265-1105), each at the
address of AOL set forth in the first paragraph of this Agreement.  In the case
of Purchase Pro, except as otherwise specified herein, the notice address will
be the address for Purchase Pro set forth in the first paragraph of this
Agreement, with the other relevant notice information, including the recipient
for notice and, as applicable, such recipient's fax number or AOL e-mail
address, to be as reasonably identified by AOL.

17.  Launch Dates.  In the event that any terms contained herein relate to or
     ------------
depend on the commercial launch date of the AOL Exchange contemplated by this
Agreement (the "Launch Date"), then it is the intention of the Parties to record
such Launch Date in a written instrument signed by both Parties promptly
following such Launch Date; provided that, in the absence of such a written
instrument, the Launch Date will be as reasonably determined by AOL based on the
information available to AOL.

18.  No Waiver.  The failure of either Party to insist upon or enforce strict
     ---------
performance by the other Party of any provision of this Agreement or to exercise
any right under this Agreement will not be construed as a waiver or
relinquishment to any extent of such Party's right to assert or rely upon any
such provision or right in that or any other instance; rather, the same will be
and remain in full force and effect.

19.  Return of Information.  Upon the expiration or termination of this
     ---------------------
Agreement, each Party will, upon the written request of the other Party, return
or destroy (at the option of the Party receiving the request) all confidential
information, documents, manuals and other materials specified the other Party,
except as provided in the Technology Development Agreement.

20.  Survival.  The Sections of this Agreement (including all exhibits hereto)
     --------
which survive expiration or termination of this Agreement by their terms, any
Sections of this Agreement (including all exhibits hereto) which are necessary
to enable or support any obligation which survives by its terms, and any payment
obligations accrued prior to termination or expiration, will all survive the
completion, expiration, termination or cancellation of this Agreement.

21.  Entire Agreement.  This Agreement, together with the Technology Development
     ----------------
Agreement, sets forth the entire agreement and supersedes any and all prior
agreements of the Parties with respect to the transactions set forth herein.
Neither Party will be bound by, and each Party specifically objects to, any
term, condition or other provision which is different from or in addition to the
provisions of this Agreement (whether or not it would materially alter this
Agreement) and which is proffered by the other Party in any correspondence or
other document, unless the Party to be bound thereby specifically agrees to such
provision in writing.

22.  Amendment.  No change, amendment or modification of any provision of this
     ---------
Agreement will be valid unless set forth in a written instrument signed by the
Party subject to enforcement of such amendment, and in the case of AOL, by an
executive of Vice President level or above.

23.  Further Assurances.  Each Party will take such action (including, but not
     ------------------
limited to, the execution, acknowledgment and delivery of

                                       38
<PAGE>

documents) as may reasonably be requested by any other Party for the
implementation or continuing performance of this Agreement.

24.  Assignment.  Except as provided in the following sentence, Purchase Pro
     ----------
will not assign this Agreement or any right, interest or benefit under this
Agreement without the prior written consent of AOL (which will not be
unreasonably withheld). Assignment and assumption of the Agreement to and by any
successor to Purchase Pro by way of a sale of all or substantially all of its
assets or a merger or consolidation will be not subject to AOL's prior written
approval, so long as the acquirer or resulting entity is financially solvent and
able to perform Purchase Pro's obligations under this Agreement. Subject to the
foregoing, this Agreement will be fully binding upon, inure to the benefit of
and be enforceable by the Parties hereto and their respective successors and
assigns.

25.  Construction; Severability.  In the event that any provision of this
     --------------------------
Agreement conflicts with the law under which this Agreement is to be construed
or if any such provision is held invalid by a court with jurisdiction over the
Parties to this Agreement, (i) such provision will be deemed to be restated to
reflect as nearly as possible the original intentions of the Parties in
accordance with applicable law, and (ii) the remaining terms, provisions,
covenants and restrictions of this Agreement will remain in full force and
effect.

26.  Remedies.  Except where otherwise specified, the rights and remedies
     --------
granted to a Party under this Agreement are cumulative and in addition to, and
not in lieu of, any other rights or remedies which the Party may possess at law
or in equity; provided that, in connection with any dispute hereunder, a Party
will be not entitled to offset any amounts that it claims to be due and payable
from the other Party against amounts otherwise payable by such Party to the
other Party.

27.  Applicable Law.  Except as otherwise expressly provided herein, this
     --------------
Agreement will be interpreted, construed and enforced in all respects in
accordance with the laws of the State of New York except for its conflicts of
laws principles.

28.  Export Controls.  Both Parties will adhere to all applicable laws,
     ---------------
regulations and rules relating to the export of technical data and will not
export or re-export any technical data, any products received from the other
Party or the direct product of such technical data to any proscribed country
listed in such applicable laws, regulations and rules unless properly
authorized.

29.  Headings.  The captions and headings used in this Agreement are inserted
     --------
for convenience only and will not affect the meaning or interpretation of this
Agreement.

30.  Counterparts.  This Agreement may be executed in counterparts, each of
     ------------
which will be deemed an original and all of which together will constitute one
and the same document.

                                       39
<PAGE>

                                   EXHIBIT G
                         Initial List of AOL Referrals
                         -----------------------------

Confidential material redacted and filed separately with the Securities and
Exchange Commission. (10 pages redacted)

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