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                                                                   EXHIBIT 10.21

                                [OPENSITE LOGO]

                          OpenSite Technologies, Inc.
                                 P.O. Box 12542
                             Research Triangle Park
                           North Carolina 27709-2542
                           -------------------------
                              Phone: 919-544-1999
                           -------------------------
                              Fax: 919-544-9367
                           -------------------------
                           Web site: www.opensite.com

June 14, 1999

Mr. Tim Oakley
209 Chiselhurst Way
Cary, NC 27513

Dear Tim:

I am pleased to confirm our understanding of your employment terms with
OpenSite. We have agreed that your start date will be July 7, 1999. Your title
will be Senior Vice President and Chief Financial Officer. The position will
report directly to me. The other components of your package are:

SHORT TERM COMPENSATION: Your annual salary will be $175,000, which will be
paid in accordance with our normal payroll policies. You will be eligible for a
bonus of 40% of your base pay. Your bonus will be based upon company
performance (50%) and individual performance (50%) in relation to agreed upon
objectives. The bonus will be paid semi-annually. Your total target short-term
compensation is $245,000 consisting of $175,000 in salary and $70,000 in annual
incentives.

PERFORMANCE REVIEWS: You will be formally reviewed annually. Your resulting
long term and short-term compensation will be based upon performance and
competitive market comparisons for Chief Financial Officers within the high
technology industry, particularly in the areas of telecommunications,
information technology and the Internet.

LONG TERM COMPENSATION - STOCK OPTIONS: You will be granted a total of 350,000
stock options with a strike price of $5.00 per share (pre reverse split).
300,000 options will be subject to a time-based vesting schedule over four
years as described in section "A" below. 50,000 options will vest at the
completion of four years of service or upon achievement of agreed-upon
objectives over a six month period as described in section "B" below. The
options will be subject to the terms and conditions of the Plan and an option
award agreement that reflects your long-term compensation arrangement. All
subsequent references to options are post reverse split. The post reverse split
references assume a 2 for 1 split and will be recalculated if the split is
anything other than 2 for 1.

Section A: Time-Based Vesting for 150,000 Shares:

1) Six Months from date of hire              25%-50%*
2) Month seven to month forty eight          1.785%-1.190%* per month

*Explanation of Vesting Ranges: The minimum number of options that will vest on
your six-month anniversary will be 25% of the 150,000 grant or 37,500. That

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number may increase up to 50% of 150,000, or 75,000, to the extent the "market
value" (number of vested options times "average market price" as defined below)
of the minimum option grant does not exceed the grant value (vested shares
times strike price of $10.00) by $800,000. Further explanation is as follows:

- At your six-month anniversary date, if the "average market price" of
  OpenSite shares is equal to or greater than $31.34 then you will vest
  in 25% of your option award (37,500 shares). The "average market
  price" will be the average daily closing price for 22 trading days
  prior to the six-month vesting date. In this case, the remaining 75%
  will vest monthly at a rate of 1.786% per month for 42 months.

- If on your six-month anniversary the average market price does not
  exceed $31.34, then additional options will be subject to accelerated
  vesting so as to provide a market value $800,000 greater than your
  grant value (up to a limit of 37,500 additional vested options). The
  remaining unvested options will then vest based on a formula to be
  determined by subtracting the six month vesting percentage from 100%
  and dividing this amount by the forty two remaining months of the
  four year total vesting period.

- If OpenSite does not go public within six months of your hire date
  then a total of 50% of the shares will vest on your six-month
  anniversary date.

         Example of Time-Based Vesting:

         At your six-month anniversary date, the average market price is
         $25.00. When multiplied by 37,500 shares, this equals a market value
         of $937,500. The difference between market value and grant vale thus
         would be $562,500 ($25.00 minus $10.00 times 37,500 shares). Since the
         market value minus grant value is less than $800,000, an additional
         15,833 options would vest, bringing your total to 53,333, since 53,333
         times the $15.00 delta equals $800,000. The remaining 64.4% (the ratio
         of 150,000 minus 53,333 to 150,000) will be vested at a rate of 1.533%
         monthly for a period of 42 months (64.4% divided by 42 months).

Section B -- Performance-Based Vesting.

The remaining 25,000 options will vest at the completion of four years of
service. However, if certain performance goals are achieved against the
following objectives, the vesting of these options will be accelerated:

- 34%, or 8,500 options, will vest immediately if OpenSite's average
  market price (as defined above), as of your six-month anniversary, is
  greater than 125% of the offering price. If the IPO is delayed so
  that average market price cannot be calculated, then the date for
  calculation will be extended to

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allow for twenty-two trading days.

33%, or 8,250 options, will vest immediately based upon successful management
of the quarterly reporting process for the first two reporting periods after
the IPO. "Successful management" of this process will be determined by the CEO.

33%, or 8,250 options, will vest immediately based upon satisfactory achievement
of personal performance milestones during your first six months of employment,
to be agreed upon with the CEO.

It is our intent to put an annual option grant program in place during 1999 and
you will have the opportunity to participate in such a plan.

SIGNING BONUS:  A signing bonus of $25,000 will be paid on your first day of
employment.

BENEFITS:  You will be eligible for all our employee benefits that are outlined
in the enclosed benefit package.

VACATION:  You will receive four weeks of vacation annually.

TERMINATION NOTICE:  The company will give you a minimum of 12 months notice or
severance as below for any termination other than for "cause." Cause is
defined as criminal acts, gross negligence or refusal to follow the reasonable
directives of the CEO or the Board of Directors. If employment is terminated
without cause then you will receive a severance sum equal to your then current
salary plus any earned but unpaid bonuses.

Tim, we are extremely excited to welcome you as a key member of the OpenSite
management team. I know I speak for our Board and everyone here in extending
our warmest wishes. If the foregoing comports with your understanding of our
agreement, please so indicate by your signature below.

                                        Sincerely,

                                        /s/ Kip A. Frey
                                        ---------------------------------------
                                        Kip A. Frey
                                        President, CEO

AGREED AND ACCEPTED:

/s/ Tim Oakley
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Tim Oakley<PAGE>   1
                                                                   EXHIBIT 10.21

                               PREMISES AGREEMENT

     THIS PREMISES AGREEMENT (this "Agreement") is dated as of December 14,
1999, and is made by and between Bill Gross' idealab!, a California corporation
("idealab!"), and GoTo.com, Inc., a Delaware corporation ("GoTo"). idealab! and
GoTo hereby agree as follows:

     1. Recitals: This Agreement is made with reference to the fact that Parsons
Information & Technology Group, Inc., as landlord ("Parsons"), and idealab!, as
tenant, entered into that certain lease, dated as of June 17, 1999 (the
"Original Lease"), as amended by that certain First Amendment to Lease dated
August 18, 1999 (the "Amendment") (the Original Lease, as amended by the
Amendment shall be referred to herein as the "Lease"), with respect to the
second, third and eighth floors of the office building located at 74 N. Pasadena
Avenue, Pasadena, California, consisting of approximately 87,192 rentable square
feet (the "Premises"). A copy of the Lease is attached hereto as Exhibit A and
incorporated by reference herein.

     2. Premises: idealab! hereby agrees to rent to GoTo, and GoTo hereby agrees
to rent from idealab!, the second and third floors of the Premises, consisting
of approximately 58,128 rentable square feet of the Premises, as shown on
Exhibit B hereto (hereinafter, the "Rented Premises"). This Agreement shall be
at all times subject and subordinate to the Lease.

     3. Term: The term of this Agreement (the "Term") shall commence on January
15, 2000 (the "Commencement Date") and terminate on October 31, 2004, unless
this Agreement is sooner terminated pursuant to its terms or the Lease is sooner
terminated pursuant to its terms. GoTo shall have the right to occupy the Rented
Premises for purposes of constructing its improvements therein as of November 7,
1999. Such occupancy (i) shall be subject to all of the provisions of this
Agreement, except for the obligation to pay Rent (as defined below); and (ii)
shall not advance the expiration date of this Agreement. GoTo shall be entitled
to the benefit of any delay in the commencement date or obligation to pay rent
as provided in the "Fixturization Period" section of Section 1 of the Amendment.
At GoTo's request and expense, idealab! will enforce its rights under such
provision for the benefit of GoTo.

     4. Security Deposit. Upon execution hereof, GoTo shall pay to idealab! the
sum of One Hundred Twenty-Three Thousand Six Hundred Twenty-Six Dollars
($123,626) in cash and a letter of credit in the amount of Two Hundred Fifty-One
Thousand Nine Hundred Six Dollars ($251,906) (the "Letter of Credit") as a
deposit (collectively, the "Security Deposit"). The Security Deposit shall be
held by idealab! without liability for interest as security for the faithful
performance by GoTo of all of the terms and conditions of this Agreement. The
Security Deposit may be commingled with other funds of idealab!. If Rent (as
defined below) or any other sum payable by GoTo to idealab! hereunder shall be
overdue and unpaid, or should GoTo fail to perform any of the covenants or
conditions of this Agreement in each case after applicable notice and cure
periods, idealab! may at its option and without prejudice to any other available
remedies, apply said Security Deposit to the payment of Rent, loss or damage
sustained by idealab! due to such breach by GoTo. The Security Deposit shall be
returned to GoTo within thirty (30) days after expiration of the Term. The
Security Deposit shall be held, and be subject to reduction, as set forth in
Section 9 of the Amendment, as incorporated herein, including the provision for
payment of interest thereon by idealab!

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     5. Rent:

          A. Base Rent. GoTo shall pay to idealab! as rent for the Rented
Premises ("Base Rent") for each month during the Term, (i) Sixty-Three Thousand
Two Hundred Eleven and 77/100 Dollars ($63,211.77) for the period beginning
January 15, 2000 through January 31, 2000, (ii) One Hundred Sixteen Thousand
Four Hundred Ten and 59/100 Dollars ($116,410.59) per month beginning February
1, 2000 through June 30, 2001, (iii) One Hundred Nine Thousand Nine Hundred
Thirty-Nine and 22/100 Dollars ($109,939.22) per month for the period beginning
July 1, 2001 through July 31, 2001 and (iv) One Hundred Three Thousand Four
Hundred Sixty-Seven and 84/100 Dollars ($103,467.84) per month beginning August
1, 2001 through the remainder of the Term. The foregoing amounts represent the
Base Rent payable under the Lease attributable to the Rented Premises, plus the
Base Rent payable thereunder with respect to the Rented Premises for the period
from November 7, 1999 through January 14, 2000 amortized over the first eighteen
(18) months of the Term. Base Rent for any period during the Term hereof which
is for less than one (1) month of the Term shall be a pro rata portion of the
monthly installment. Base Rent shall be payable on the first day of each month
without notice or demand and without any deduction, offset, or abatement, in
lawful money of the United States of America. Base Rent and Additional Rent (as
defined below) shall be paid directly to idealab! at 130 W. Union Street,
Pasadena, CA 91103, Attn.: Accounting, or such other address as may be
designated in writing by idealab!.

          B. Monthly Costs. In addition to the Base Rent, GoTo shall be
responsible for its proportionate share of any payment of any operating
expenses, costs of maintenance, repair and improvements, taxes, assessments,
insurance costs, utility charges or any other amounts in connection with the use
or occupancy of the Rented Premises payable by idealab! under the Lease. As used
herein, "proportionate share" shall mean 22.71% of the Building, and 66.67% of
the Premises.

          C. Parking Rent. GoTo shall pay Parking Rent at the rates specified in
Section 18 below. A full month of Parking Rent shall be charged for the use of
parking spaces during any portion of a month. Parking Rent shall be due and
payable at the same time as the Base Rent and shall include rent for parking
spaces allocated in the prior month and not previously paid.

          D. Taxes and Building Operating Expenses. GoTo shall pay to idealab!
its proportionate share of Taxes and Building Operating Expenses (as defined in
the Lease) imposed on idealab! pursuant to Sections 5.2 and 6.1 of the Original
Lease.

          E. Additional Rent. All monies other than Base Rent required to be
paid by GoTo under this Agreement shall be deemed additional rent ("Additional
Rent"). Base Rent and Additional Rent are hereinafter collectively referred to
as "Rent."

          F. HVAC. GoTo shall be responsible for any charges for after hours use
of the HVAC system that GoTo requested with respect to the Rented Premises
during the period which began on November 7, 1999 and ended on January 15, 2000.
The aggregate amount of such charges shall be pro-rated over the first eighteen
months of this Agreement and paid as "Additional Rent" hereunder on the first
day of each such month without notice or demand and without any deduction,
offset, or abatement, in lawful money of the United States of America.

     6. Late Charge: If GoTo fails to pay to idealab! any amount due hereunder
within ten (10) days after the due date, GoTo shall pay idealab! upon demand
interest on all amounts due, at a rate equal to the lesser of the prime rate
quoted by the Bank of America plus two percent (2%) or the maximum rate allowed
by law (the "Interest Rate"), from the tenth (10th) day after the due date to
and including the date of the payment.

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         7. Use: GoTo may use the Rented Premises only for the uses permitted
under the Lease. GoTo shall promptly and properly observe and comply with all
laws with respect to GoTo's use of the Rented Premises. Notwithstanding the
foregoing, GoTo shall not be required to comply, or pay the cost of complying,
with any laws requiring the construction of structural alterations or
improvements to the Rented Premises, unless due to GoTo's particular use of the
Rented Premises or GoTo's improvements. GoTo shall comply with all restrictions
set forth in the Lease and all rules and regulations promulgated from time to
time by Parsons. Notwithstanding anything to the contrary in this Agreement or
in the Lease, GoTo shall not be permitted to sublicense or otherwise assign the
Rented Premises or any of its obligations hereunder to any party, except to an
entity as described in Section 14.6 of the Lease.

     8. Repairs: GoTo shall maintain in good order and condition the Rented
Premises. This includes promptly reporting to idealab! all maintenance and
repairs needed for the Rented Premises. Should the need for repairs arise
directly or indirectly from GoTo's abuse or neglect, GoTo shall be solely
responsible for the cost of such repairs.

     9. Improvements: GoTo shall make any and all alterations and improvements
required for the Rented Premises at its sole cost and expense. All such
alterations or improvements shall require the prior consent of idealab!. Subject
to the written consent of Parsons, idealab! hereby (i) consents to the
construction by GoTo of the alterations as described in Exhibit C hereto and
(ii) agrees that GoTo shall surrender such alterations upon the expiration of
the Term hereof.

     10. Services: idealab! shall cause Parsons to provide the Rented Premises
(i) twenty-four (24) hours per day, seven (7) days per week, water, gas,
electricity and sewer service, (ii) Monday through Friday, janitorial service
and waste pick-up and (iii) heating, ventilating and air conditioning ("HVAC")
(A) Monday through Friday from 8:00 a.m. to 6:00 p.m. and on Saturdays from 8:00
a.m. to 1:00 p.m., except on holidays and (B) at all other times requested by
GoTo, whereupon GoTo shall pay its proportionate cost of such HVAC.

     11. Indemnity:

          A. Except to the extent caused by the negligence or willful misconduct
of idealab!, its agents, employees or invitees or idealab!'s breach of this
Agreement, GoTo shall indemnify, defend with counsel reasonably acceptable to
idealab!, protect and hold idealab! harmless from and against any and all
claims, liabilities, judgments, causes of action, damages, costs and expenses
(including reasonable attorneys' and experts' fees), caused by or due to: (i)
the use, condition, operation or occupation by GoTo of the Rented Premises; (ii)
any repairs, alterations, additions or changes made by GoTo, or idealab! on
behalf of GoTo, to the Rented Premises (the "Alterations"), (iii) the negligence
or willful misconduct of GoTo, its employees, agents, invitees, and licensees or
(iv) any failure by GoTo to comply with the terms or conditions of this
Agreement. GoTo's indemnification of idealab! shall survive termination of this
Agreement.

          B. Except to the extent caused by the negligence or willful misconduct
of GoTo, its agents, employees or invitees or GoTo's breach of this Agreement,
idealab! shall indemnify, defend with counsel reasonably acceptable to GoTo,
protect and hold GoTo harmless from and against any and all reasonable claims,
liabilities, judgments, causes of action, damages, costs and expenses (including
reasonable attorneys' and experts' fees) caused by or due to: (i) the negligence
or willful misconduct of idealab!, its employees, agents, invitees or licensees;
or (ii) any failure by idealab! to comply with the terms or conditions of this
Agreement. idealab!'s indemnification of GoTo shall survive termination of this
Agreement.

     12. Insurance: GoTo shall keep in full force and effect, at GoTo's sole
cost and expense, a commercial general liability policy of insurance, insuring
coverage of idealab! (as an additional insured) and GoTo in the amounts set
forth in Section 9.3.1 of the Original Lease. The liability policy shall name
idealab! and Parsons as an additional insured.

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     13. Release and Waiver of Subrogation: Notwithstanding anything to the
contrary herein, idealab! and GoTo hereby release each other, and their
respective agents, employees, subtenants, and contractors, from all liability
for damage to any property that is caused by or results from a risk which is
actually insured against or which would normally be covered by "all risk"
property insurance, without regard to the negligence or willful misconduct of
the entity so released. Each party shall use its commercially reasonable efforts
to cause each insurance policy it obtains to provide that the insurer thereunder
waives all right of recovery by way of subrogation as required herein in
connection with any injury or damage covered by the policy. If the insurance
policy cannot be obtained with the waiver of subrogation, or if the waiver of
subrogation is available only at additional cost and the party for whose benefit
the waiver is not obtained does not pay the additional cost, then the party
obtaining the insurance immediately shall notify the other party.

     14. Damage: If the Rented Premises, or any part thereof, are materially
damaged due to any peril, GoTo shall be entitled to an abatement of all Rent to
the extent of the interference with GoTo's use of the Rented Premises occasioned
thereby. If the Rented Premises are materially damaged by any peril and the
repair would reasonably be expected to take more than one hundred eighty (180)
days, then (i) GoTo shall have the option to terminate this Agreement by
delivery of written notice thereof to idealab! and (ii) idealab! shall have the
right to terminate this Agreement if the Lease is terminated by Parsons.

     15. Assignment: Except to a subsidiary of GoTo or pursuant to a change of
control in GoTo or as otherwise permitted under Section 14.6 of the Original
Lease, as incorporated herein, GoTo may not assign this Agreement (including an
assignment by operation of law), rent a portion of the Rented Premises or permit
any use of the Rented Premises by another party, without the prior written
consent of idealab!.

     16. Default: GoTo shall be in default of its obligations under this
Agreement if any of the following events occur:

          A. GoTo fails to pay any Rent when due, when such failure continues
for ten (10) days after written notice;

          B. The legal abandonment of the Rented Premises by GoTo;

          C. The failure of GoTo to do, or cause to be done, any act required by
this Agreement, other than payment of Rent or other charges, which failure
continues for a period of ten (10) days after written notice or, if such breach
cannot reasonably be cured within said ten (10) day period, GoTo fails to
commence curative action within said ten (10) day period and diligently to
pursue the same to completion;

          D. To the extent permitted by law, any act of bankruptcy caused,
suffered or permitted by GoTo. For purposes of this Agreement, "act of
bankruptcy" shall include any of the following:

               (i) Any general assignment for the benefit of creditors;

               (ii) The filing of any petition by or against GoTo to have GoTo
adjudged a bankrupt or a petition for reorganization or arrangement under Title
11 of the United States Code relating to bankruptcy, as amended or comparable
law, unless such petition is filed against GoTo and dismissed within ninety (90)
days;

               (iii) The appointment of a trustee or receiver to take possession
of substantially all of GoTo's assets located in the Rented Premises or GoTo's
interest in this Agreement; or

               (iv) The attachment, execution or other judicial seizure of
substantially all of GoTo's assets located in the Rented Premises, or GoTo's
interest in this Agreement.

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          E. GoTo commits any other act or omission which constitutes a default
under the Lease, which has not been cured after delivery of written notice and
passage of the applicable grace period provided in the Lease.

     17. Remedies: In the event of any default by GoTo, idealab! shall have all
remedies provided under the Lease and by applicable law.

     18. Parking: GoTo shall have the right to use, throughout the Term, three
hundred (300) non-reserved parking spaces in the garage (the "Base Parking") and
shall pay as rent therefor Sixteen Thousand Five Hundred Dollars ($16,500) per
month, which may be adjusted as provided in Section 5.1.2 of the Original Lease.
In the event that idealab! is able to lease, license and otherwise acquire the
legal right to use parking spaces at the parking garage located at 150-160 W.
Union Street, Pasadena, California, GoTo shall have the right to use for the
remainder of the Term an additional twenty (20) non-reserved parking spaces in
the garage (the "Additional Parsons Parking") and shall pay as rent therefor One
Thousand One Hundred Dollars ($1,100) per month. In addition, idealab! shall
provide for GoTo's use throughout the Term one hundred seven (107) parking
spaces in reasonable proximity to the Premises (which number shall be reduced by
twenty (20) parking spaces in the event that GoTo has the right to use the
Additional Parsons Parking) (the "Off-Site Parking"). GoTo shall pay as rent for
the Off-Site Parking idealab!'s actual cost for such the Off-Site Parking, not
to exceed One Hundred Fifty Dollars ($150) per space. The rent for the Base
Parking, the Additional Parsons Parking and the Off-Site Parking shall be
collectively referred to herein as the "Parking Rent". GoTo shall also be
responsible for the parking charges related to the Base Parking for the period
beginning November 7, 1999 and ended January 15, 2000. Accordingly, for the
first eighteen (18) months of this Agreement, GoTo shall pay an additional Two
Thousand Sixty-Three and 98/100 Dollars ($2,063.98) per month for such parking
charges as "Additional Rent" hereunder on the first day of each such month
without notice or demand and without any deduction, offset, or abatement, in
lawful money of the United States of America.

     19. Broker: idealab! and GoTo each represent to the other that they have
dealt with no real estate brokers, finders, agents or salesmen in connection
with this transaction and that no liability has been incurred, nor will be
incurred, directly or indirectly, for brokerage or finders' fees or agents'
commissions or any similar charges in connection with this Agreement or the
transactions contemplated hereby. Each party agrees to hold the other party
harmless from and against all claims for brokerage commissions, finder's fees or
other compensation made by any other agent, broker, salesman or finder as a
consequence of such party's action or dealings with such agent, broker,
salesman, or finder.

     20. Notices: Unless at least five (5) days' prior written notice is given
in the manner set forth in this section, the address of each party for all
notices and other communications required or permitted hereunder shall be that
address set forth below their signatures at the end of this Agreement. All
notices, demands or communications in connection with this Agreement shall be
personally delivered or properly addressed and deposited in the mail (certified,
return receipt requested, and postage prepaid) or delivered by a reputable
courier. Notices shall be deemed delivered (a) upon receipt, if personally
delivered, (b) three (3) business days after mailing, if mailed as set forth
above or (c) the number of days indicated by such courier. Notwithstanding the
foregoing, all notices given to Parsons under the Lease shall be considered
delivered only when delivered in accordance with the Lease.

     21. idealab!'s Obligations with Respect to the Lease: idealab! shall fully
perform all of its obligations under the Lease to the extent GoTo has not
expressly agreed to perform such obligations under this Agreement. idealab!
shall not terminate the Lease, amend or waive any provisions under the Lease or
make any elections, exercise any right or remedy or give any consent or approval
under the Lease that would materially adversely affect GoTo's use of the Rented
Premises or materially increase GoTo's obligations or materially decrease GoTo's
rights under this Agreement, without GoTo's prior written consent, which shall

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not be unreasonably withheld, conditioned or delayed. idealab!, with respect to
the obligations of Parsons under the Lease, shall use its diligent good faith
efforts to cause Parsons to perform such obligations for the benefit of GoTo.
Such diligent good faith efforts shall include, without limitation, upon GoTo's
written request, immediately notifying Parsons of its nonperformance under the
Lease and requesting that Parsons perform its obligations under the Lease.

     22. Quiet Enjoyment: GoTo shall peacefully have, hold and enjoy the Rented
Premises, subject to the terms and conditions of this Agreement, provided that
there is not a default by GoTo. In the event, however, that idealab! defaults in
the performance or observance of any of idealab!'s remaining obligations under
the Lease or fails to perform idealab!'s stated obligations under this
Agreement, then GoTo shall give idealab! notice specifying in what manner
idealab! has defaulted, and if such default shall not be cured by idealab!
within thirty (30) days thereafter (except that if such default cannot be cured
within said thirty (30) day period, this period shall be extended for an
additional reasonable time, provided that idealab! commences to cure such
default within such thirty (30) day period and proceeds thereafter to effect
such cure), then GoTo shall be entitled to cure such default and promptly
collect from idealab! GoTo's reasonable expenses in so doing (including, without
limitation, reasonable attorneys' fees and court costs). GoTo shall not be
required, however, to wait the entire cure period described herein if earlier
action is required to comply with the Lease or with any applicable governmental
law, regulation or order.

     23. Other Terms: Except as set forth below, the terms and conditions of
this Agreement shall include all of the terms of the Lease and such terms are
incorporated into this Agreement as if fully set forth herein, except that: (i)
each reference in such incorporated sections to "Lease" shall be deemed a
reference to "Premises Agreement"; (ii) each reference to the "Premises" shall
be deemed a reference to "Rented Premises"; (iii) each reference to "Lessor" and
"Lessee" shall be deemed a reference to "idealab!" and "GoTo", respectively,
except as otherwise expressly set forth herein, and (iv) with respect to work,
services, repairs, restoration, insurance, indemnities, representations,
warranties or the performance of any similar obligation of Parsons under the
Lease, the sole obligation of idealab! shall be to request the same in writing
from Parsons as and when requested to do so by GoTo, and to use idealab!'s
reasonable efforts to obtain Parsons' performance. Notwithstanding the
foregoing, (a) the following provisions of the Lease shall not be incorporated
herein: Sections 1.1, 2.1, 3.2 (the first paragraph only), 3.2.1 (the first
sentence only), 4.1, 5.1 (except Section 5.1.4), 5.5, 19.2.1, 19.2.9, 24.1, 28
and 29.19 (except 29.19.5, after the first comma) and Exhibits A, B (Article VII
only) and D of the Original Lease and Sections 1 (except the "Fixturization
Period" section), 2, 3 (the first sentence and the first subpart (i) only), 5, 7
and 9.2 of the Amendment; (b) references in the following provisions to "Lessor"
shall mean Parsons only: Sections 3.1, 3.2.2, 3.3, 3.4, 5.2.1, 5.2.2.1, 6, 7.3,
8, 17, 18.2, 18.5, 22 and 29.13 and Exhibits C and E of the Original Lease and
Section 3 of the Amendment; and (c) references in the fourth line of Section 9.4
of the Original Lease to "Lessor" shall mean Parsons and idealab!. In the event
of a conflict between the express provisions hereof or the incorporated
provisions of the Lease, the express provisions hereof shall prevail.

     24. Miscellaneous: This Agreement shall in all respects be governed by and
construed in accordance with the laws of the State of California. If any term of
this Agreement is held to be invalid or unenforceable by any court of competent
jurisdiction, then the remainder of this Agreement shall remain in full force
and effect to the fullest extent possible under the law, and shall not be
affected or impaired. This Agreement may not be amended except by the written
agreement of all parties hereto. Time is of the essence with respect to the
performance of every provision of this Agreement in which time of performance is
a factor. Any executed copy of this Agreement shall be deemed an original for
all purposes. This Agreement shall, subject to the provisions regarding
assignment, apply to and bind the respective heirs, successors, executors,
administrators and assigns of idealab! and GoTo. The language in all parts of
this Agreement shall in all cases be construed as a whole according to its fair
meaning, and not strictly for or against either idealab! or GoTo. The captions
used in this Agreement are for convenience only and shall not be considered in
the construction or interpretation of any provision hereof. When a party is
required to do something by this Agreement, it shall do so at its sole cost and
expense without right of reimbursement from the other party

                                       6
<PAGE>   7

unless specific provision is made therefor. Whenever one party's consent or
approval is required to be given as a condition to the other party's right to
take any action pursuant to this Agreement, then such consent or approval shall
not be unreasonably withheld or delayed. If either party brings any action or
legal proceeding with respect to this Agreement, the prevailing party shall be
entitled to recover reasonable attorneys' and experts' fees and court costs.

     25. Option Space: GoTo shall have the right to lease additional premises in
the West Annex as set forth in Section 6 of the Amendment. At GoTo's request,
idealab! will exercise its rights under Section 6 of the Amendment for GoTo's
benefit and as directed by GoTo. Any such additional premises shall become
additional Rented Premises hereunder, and the parties shall execute an amendment
to the Premises Agreement to incorporate such additional premises.

     26. Option to Extend: GoTo shall have the option to extend the Term as set
forth in Section 29.19.5 of the Original Lease. At GoTo's request, idealab! will
exercise its rights under Section 29.19.5 of the Original Lease for GoTo's
benefit and as directed by GoTo.

     27. Signage: GoTo shall have the signage rights as set forth in Section 8
of the Amendment.

     28. Agreements by Parsons: The obligations of GoTo hereunder are
conditioned on GoTo's receipt within twenty (20) days from the date hereof of
written agreement by Parsons to the items set forth in Exhibit D hereto. GoTo
shall have the right to terminate this Agreement at any time prior to receipt of
such agreement by delivering written notice thereof to idealab!

     IN WITNESS WHEREOF, the parties have executed this Premises Agreement as of
the day first above written.

IDEALAB!:                                  GOTO:

BILL GROSS' IDEALAB!,                      GOTO.COM, INC.,
a California corporation                   a Delaware corporation

By:                                        By:
   -------------------------------             -----------------------------
Name:                                      Name:
      -----------------------------            -----------------------------
Its:                                       Its:
     ------------------------------            ------------------------------

Address: 130 W. Union Street               Address: 140 W. Union Street
         Pasadena, CA  91103                        Pasadena, CA  91103
Attn.:   Chief Operating Officer           Attn.:   Chief Financial Officer

                                       7
<PAGE>   8

                                    EXHIBIT A

                                      LEASE

                                       8

<PAGE>   9

                                    EXHIBIT B

                                  THE PREMISES

                                       9
<PAGE>   10

                                    EXHIBIT C

                                   ALTERATIONS

                            [To be completed by GoTo]

                                       10
<PAGE>   11

                                    EXHIBIT D

                              AGREEMENTS BY PARSONS

     Parsons hereby consents to the Premises Agreement dated December ___, 1999
between Bill Gross' idealab! and GoTo.com, Inc. and agrees that, notwithstanding
anything to the contrary in the Lease:

     (a) Parsons hereby agrees that the release and waiver of subrogation set
forth in Section 13 of the Premises Agreement shall apply as between Parsons,
idealab! and GoTo.

     (b) GoTo may, without Parsons' prior written consent, sublet the Rented
Premises or assign the Premises Agreement to an entity as described in Section
14.6 of the Lease.

     (c) Parsons hereby consents to the construction by GoTo of the alterations
described in Exhibit C to the Premises Agreement and agrees that such
alterations may be surrendered upon the termination o the Lease (provided GoTo
restores the ceiling of the Rented Premises to a "dropped ceiling" if requested
by Parsons' next tenant).

     (d) Parsons hereby consents to GoTo's installation of signage as set forth
in Section 8 of the First Amendment to the Lease.

                                       11

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