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                                                                   EXHIBIT 10.22

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT
AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR APPLICABLE
STATE LAWS. THESE SECURITIES MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF
SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SAID ACT OR LAWS, WHICH IN THE
CASE OF AN EXEMPTION FROM REGISTRATION SHALL BE THE SUBJECT OF AN OPINION OF
COUNSEL (WHICH OPINION AND COUNSEL SHALL BE REASONABLY SATISFACTORY TO THE
CORPORATION).

                           INTERACTIVE KNOWLEDGE, INC.
                           STOCK SUBSCRIPTION WARRANT

Warrant to Subscribe for
33,325 Shares of Common Stock                   Effective as of January 8, 1999

                         Not Transferable or Exercisable
                     Except Upon Conditions Herein Specified

                   THIS CERTIFIES that, for value received, Concept Ventures,
Inc. or its permitted assigns (the "Holder"), is entitled to subscribe for and
purchase from Interactive Knowledge, Inc., a Delaware corporation (the
"Corporation"), during the period specified in Section 1 (such period being
hereinafter called the "Exercise Period"), up to 33,325 shares (the "Warrant
Shares") of the Common Stock $.001 par value ("Common Stock") of the
Corporation, at $1.20 per share (such price and such other price as shall
result, from time to time, from the adjustments specified in Section 4 hereof is
referred to herein as the "Warrant Price").

                    SECTION 1. Term. The Purchase right represented by this
Warrant is exercisable, in whole or in part, at any time and from time to time
during the next five years and shall expire five years from the date of this
warrant on January 7, 2004.

                    SECTION 2. Exercise of Warrant. (a) The rights represented
by this Warrant may be exercised by the Holder hereof, in whole or in part, at
any time during the Exercise Period by the surrender of this Warrant (properly
endorsed) and submission of the Form of Subscription attached hereto as EXHIBIT
A at the office of the Corporation, 1033 Walnut Street, Suite 200, Boulder,
Colorado 80302 or at such other agency or office of the Corporation in the
United States of America as it may designate by notice in writing to the Holder
at the address of such Holder appearing on the books of the Corporation, and by
payment to the Corporation of the Warrant Price in cash or by certified check
for each Warrant Share being purchased. In the event of any exercise of the
rights represented by this Warrant, a certificate or certificates for the shares
so purchased registered in the name of the Holder, shall be delivered to the
Holder hereof within ten days after the rights represented by this Warrant shall
have been so exercised; and, unless this Warrant has expired, a new Warrant
representing the number of Warrant Shares, if any, with respect to which this
Warrant shall not then have been exercised shall also be issued to the Holder
hereof within such time. The person in whose name any certificates for Warrant
Shares is issued upon exercise of this Warrant shall for all purposes be deemed
to have become the holder of record of such shares at the date on which the
Warrant was surrendered and payment of the Warrant Price and any applicable
taxes was made, irrespective of the date of delivery of such certificate, except
that, if the date of such surrender and payment is a date when the stock
transfer books of the Corporation are closed, such person shall be deemed to
have become the holder of such shares at the close of business on the next
succeeding date on which the stock transfer books are open.

                    (b)  NOTWITHSTANDING ANY OTHER PROVISION OF THIS WARRANT,
THE OBLIGATION OF THE CORPORATION TO ISSUE AND SELL COMMON STOCK TO THE HOLDER
UPON EXERCISE OF THIS WARRANT IS EXPRESSLY CONDITIONED UPON COMPLIANCE OF SUCH
ISSUANCE AND SALE WITH THE APPLICABLE FEDERAL AND STATE SECURITIES LAWS WITHOUT
REGISTRATION OR OTHER QUALIFICATION THEREUNDER. THE CORPORATION SHALL HAVE NO
OBLIGATION TO EFFECT ANY REGISTRATION OR OTHER QUALIFICATION WITH RESPECT TO
THIS WARRANT OR THE SHARES OF COMMON STOCK ISSUED AND ISSUABLE UPON EXERCISE
HEREOF.

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                    (c)  Notwithstanding the provisions of Section 2 (a) above,
this Warrant shall automatically be deemed to be exercised in full in the manner
set forth in Section 2 (e) hereof, without any further action on behalf of the
Holder on the earliest of a date: (x) ten (10) days prior to a "Sale of the
Company" (as defined), or (y) immediately prior to the closing of an
underwritten initial public offering by the Company (an "IPO"). A "Sale of the
Company" shall mean either of the following (i) the acquisition of all or
substantially all of the capital stock of the Company by another entity by means
of any transaction or series of related transactions (including, without
limitation, any reorganization, merger or consolidation but, excluding any
merger effected exclusively for the purpose of changing the domicile of the
Company); or (ii) a sale of all or substantially all of the assets of the
Company; unless the Company's shareholders of record as constituted immediately
prior to such acquisition or sale will, immediately after such acquisition or
sale (by virtue of securities issued as consideration for the corporation's
acquisition or sale or otherwise) hold at least 50% of the voting power of the
surviving or acquiring entity. In connection with the exercise of this Warrant
pursuant to clause (x) and clause (y) of this Section 2(c), such exercise shall
be conditioned upon the closing of such Sale of the Company or IPO and the
Warrant shall not be deemed to have been exercised until the closing of such
Sale of the Company or IPO.

                    (d)  Public Offering. For purposes of this Warrant, IPO
means the sale of the Company's Common Stock pursuant to a registration
statement under the Securities Act of 1933, as amended, for an underwritten
public offering (other than a registration on Form S-8, Form S-4 or comparable
forms), which results in aggregate cash proceeds (prior to underwriters'
commissions and expenses) to the Company of more than $7,500,000. Immediately
prior to the closing of any Public Offering prior to the Expiration Date, any
portion of this Warrant then not exercised or exercisable will be exercisable
for the number of shares of the Company's Common Stock that would have resulted
from the conversion, pursuant to the Company's Articles of Incorporation then in
effect of the maximum number of shares of Common Stock that could have been
acquired by the Holder upon the exercise of the unexpired portion of this
Warrant immediately prior to such Public Offering.

                    (e)  Net Issue Election. Upon automatic exercise of this
Warrant as provided in Section 2(c) above or at any time or from time to time as
the Holder may elect, the Holder shall be entitled to receive, without the
payment by the Holder of any additional consideration, shares of Common Stock
equal to the value of this Warrant or any portion hereof by the surrender of
this Warrant or such portion to the Company, with the net issue election notice
attached hereto as EXHIBIT B duly executed, at the principal office of the
Company. Thereupon, the Company shall issue to the Holder such number of fully
paid and nonassessable shares of Common Stock as is computed using the following
formula:

                                    X = Y(A-B)
                                        ------
                                          A

     where:            X=   the number of shares of Common Stock to be issued to
                            the Holder.

                       Y=   the number of shares of Common Stock covered by
                            this Warrant in respect of which the net issue
                            election is made.

                       A=   the fair market value of one share of Common Stock,
                            as determined pursuant to subsection (f) below, as
                            at the time the net issue election is made.

                       B=   the Exercise Price in effect under this Warrant at
                            the time the net issue election is made.

                    (f)  Determination of Fair Market Value. For purposes of
this Section, fair market value of one share of Common Stock as of a particular
date (the "Determination Date") shall mean:

                         (i) In the case of an initial public offering of the
Common Stock, the initial "Price to Public" of one share of Common Stock
specified in the final prospectus with respect to such offering;

                         (ii) In the case of a Sale of the Company, the
effective per share consideration to be received in a Sale of the Company by
holders of the Common Stock, or if no such price is set

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forth in the agreement concerning the Sale of the Company, then as determined in
good faith by the Company's Board of Directors;

                         (iii) If the Company's Common Stock is listed on a
security exchange or the Nasdaq National Market, the closing price of the
Company's Common Stock on such exchange or the Nasdaq National Market on the day
notice of exercise is provided to the Company under Section 1.4(b) hereof; or

                         (iv) If Sections 2(f)(i), (ii), or (iii) do not apply,
then as determined by the Board of Directors in good faith, which determination
shall be conclusive and binding on the holder hereof.

                    SECTION 3. Representations of Holder.

                    3.1 Investment Intent. Holder hereby warrants and represents
that Holder is acquiring this Warrant, and any Warrant Shares issued upon
exercise of this Warrant, for Holder's own account and not with a view to their
resale or distribution.

                    3.2 Exempt from Registration. Holder acknowledges that this
Warrant has not been registered under the Securities Act of 1933, as amended
(the "1933 Act"), on the ground that the issuance of this Warrant is exempt from
registration pursuant to Section 4(2) of the 1933 Act, and that the Company's
reliance on such exemption is predicated on the representations of Holder set
forth herein.

                    3.3 Investment Experience. In connection with the investment
representations made herein, Holder represents that it is able to fend for
itself in the transactions contemplated by this Warrant, has such knowledge and
experience in financial and business matters as to be capable of evaluating the
merits and risks of his investment, has the ability to bear the economic risks
of its investment and has been furnished with and has had access to such
information as it has requested and deemed appropriate to its investment
decision.

                    3.4 Restricted Securities. Holder hereby confirms that
Holder has been informed that this Warrant, and the Warrant Shares issued upon
exercise of this Warrant, are restricted securities under the 1933 Act and may
not be resold or transferred unless this Warrant, and the Warrant Shares issued
upon exercise of this Warrant, are first registered under the federal securities
laws or unless an exemption from such registration is available. Accordingly,
Holder hereby acknowledges that Holder is prepared to hold this Warrant, and the
Warrant Shares issued upon exercise of this Warrant, for an indefinite period
and that Holder is aware that Rule 144 of the Securities and Exchange Commission
issued under the 1933 Act is not presently available to exempt the issuance of
this Warrant from the registration requirements of the 1933 Act.

                         (a) Disposition of Shares. Holder hereby agrees that
Holder shall make no disposition of this Warrant, and the Warrant Shares issued
upon exercise of this Warrant, unless and until Holder shall have (i) provided
the Company with an opinion of counsel reasonably satisfactory to the Company
that (A) the proposed disposition does not require registration of the Warrant
Shares under the 1933 Act, or (B) all appropriate action necessary for
compliance with the registration requirements of the 1933 Act or of any
exemption from registration available under the 1933 Act (including Rule 144)
has been taken. Disposition of this Warrant is further restricted by Sections
3.5 and 7 of this Warrant.

                    3.5 Restrictive Legend. In order to reflect the restrictions
on disposition of the Warrant Shares, the stock certificates for the Warrant
Shares will be endorsed with the following restrictive legends to the following
effect:

          "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR THE
          SECURITIES LAWS OF ANY STATE AND MAY NOT BE SOLD OR OTHERWISE DISPOSED
          OF EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH
          ACT AND APPLICABLE STATE SECURITIES LAWS OR PURSUANT TO

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          AN APPLICABLE EXEMPTION TO THE REGISTRATION REQUIREMENTS OF SUCH ACT
          OR SUCH LAWS.

          THE SHARES OF STOCK REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE
          TERMS OF A STOCK SUBSCRIPTION WARRANT DATED JANUARY 8, 1999 AND MAY
          NOT BE SOLD, TRANSFERRED, ASSIGNED, HYPOTHECATED OR OTHERWISE DISPOSED
          OF EXCEPT IN ACCORDANCE WITH THE TERMS OF SUCH WARRANT. SUCH WARRANT
          MAY BE EXAMINED AT THE PRINCIPAL PLACE OF BUSINESS OF THE COMPANY AND
          A COPY THEREOF WILL BE FURNISHED WITHOUT CHARGE TO THE HOLDER OF THIS
          CERTIFICATE UPON RECEIPT BY THE COMPANY AT ITS PRINCIPAL PLACE OF
          BUSINESS OR REGISTERED OFFICE OF A WRITTEN REQUEST FROM THE
          SHAREHOLDER.

                    SECTION 4. Covenants as to Common Stock. The Corporation
covenants and agrees that all shares of Common Stock that may be issued upon the
exercise of the rights represented by this Warrant, will, upon issuance, be
validly issued, fully paid and nonassessable and free from all taxes, liens and
charges with respect to the issue thereof. Without limiting the generality of
the foregoing, the Corporation covenants that it will from time to time take all
such actions as may be requisite to assure that the stated or par value per
share of Common Stock is at all times equal to or less than the lowest Warrant
Price per share of Common Stock issuable upon exercise of this Warrant. The
Corporation further covenants and agrees that the Corporation will at all times
have authorized and reserved, free from preemptive rights, a sufficient number
of shares of its Common Stock to provide for the exercise of the rights
represented by this Warrant.

                    SECTION 5. Recapitalization; Fundamental Changes;
Extraordinary Distributions.

                    5.1 Changes in Outstanding Shares. If the Corporation at any
time subdivides or combines its outstanding shares of the Common Stock into
greater or lesser number of the shares of the Common Stock (including, without
limitation, by stock dividend, stock split, or recapitalization), then (a) the
Warrant Price shall be adjusted so that it shall equal the price determined by
multiplying the Warrant Price by a fraction, the numerator of which shall be the
number of shares of the Common Stock outstanding immediately prior to such
action and the denominator of which shall be the number of shares outstanding
immediately after giving effect to such action, and (b) the number of Shares
purchasable for the Warrant Price upon exercise of this Warrant at the time of
the effective date of such subdivision or combination shall be adjusted so that
such number shall equal the number determined by multiplying the number of
shares purchasable for the Warrant Price immediately prior to such subdivision
or combination by a fraction, the numerator of which shall be the number of
shares of the Common Stock outstanding immediately after giving effect to such
action and the denominator of which shall be the number of shares outstanding
immediately prior to such action.

                    5.2 Reclassification or Merger. Subject to the provisions of
Section 2, in the event of any capital reorganization or reclassification of the
capital stock of the Corporation, any consolidation or merger of the Corporation
with or into another corporation, or any sale, lease or other disposition of all
or substantially all of the assets of the Corporation, that is effected in such
a manner that holders of shares of the Common Stock are entitled to receive
securities and/or property (including cash) with respect to or in exchange for
shares of the Common Stock, the Corporation shall, as a condition precedent to
such transaction, cause effective provision to be made so that the Holder shall
have the right thereafter to exercise this Warrant for the kind and amount of
securities and/or other property receivable upon such event by a holder of the
number of shares of the Common Stock for which this Warrant could have been
exercised immediately prior to such event, subject to the adjustments which
shall be as nearly equivalent as practicable to the adjustments provided for in
this Warrant.

                    5.3 Extraordinary Distribution. If the Corporation makes any
distribution of its assets upon or with respect to shares of the Common Stock as
a liquidating or partial liquidating dividend, or other than as a dividend
payable out of legally available funds, the Holder shall upon exercise of this
Warrant thereafter, receive, in addition to the shares of the Common Stock so
purchased or paid, the amount of such assets (or, at the option of the

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Corporation, a sum equal to the fair value thereof at the time of distribution
as determined by the Board of Directors of the Corporation in its reasonable
discretion) which would have been distributed to the Holder upon exercise of
this Warrant immediately prior to the record date for such distribution.

                    5.4 Notice of Adjustment. Whenever the Warrant Price shall
be adjusted as provided in this Section 5, the Corporation shall forthwith file,
at the principal office of the Corporation, a statement showing in detail the
facts requiring such adjustment and the Warrant Price that shall be in effect
after such adjustment, and the Corporation shall also cause a copy of such
statement to be sent by mail, first class postage prepaid, to the Holder at the
address of the Holder appearing on the Corporation's records. Where appropriate,
such copy may be given in advance and may be included as part of a notice
required to be mailed under the provisions of subsection 5.5.

                    5.5 Notice of Record Date. In the event the Corporation
shall propose to take any action of the type described in this Section 5, the
Corporation shall give notice to the Holder, in the manner set forth in
subsection 5.4, which notice shall specify the record date, if any, with respect
to any such action and the approximate date on which such action is to take
place. Such notice shall also set forth such facts with respect thereto as shall
be reasonably necessary to indicate the effect of such action (to the extent
such effect may be known at the date of such notice) on the Warrant Price and
the number, kind or class of shares or other securities or property which shall
be deliverable upon the exercise of this Warrant. In the case of any action
which would require the fixing of a record date, such notice shall be given at
least 10 days prior to the date so fixed, and in case of all other action, such
notice shall be given at least 15 days prior to the taking of such proposed
action.

                    SECTION 6. Stockholder Rights. This Warrant shall not
entitle the Holder to any voting rights or other rights as a stockholder of the
Corporation.

                    SECTION 7. Transfer of Warrant. This Warrant is not
transferable, except upon dissolution of Holder, as a distribution to the owners
of Concept Ventures, Inc., or if Holder is an individual to Holder's spouse,
children, grandchildren, and/or to a trust for the beneficiary of Holder's
spouse, children and/or grandchildren, or upon the death of Holder. All such
transfers shall be Subject to Sections 2 and 3, and shall be requested at the
agency or office of the Corporation referred to in Section 2, by the Holder in
person or by duly authorized attorney, upon surrender of this Warrant properly
endorsed and in compliance with any requirements stated elsewhere herein. Each
taker and holder of this Warrant or portion hereof, by taking or holding the
same, consents and agrees that this Warrant, when endorsed in blank, shall be
deemed negotiable, and, when so endorsed the holder hereof may be treated by the
Corporation and all other persons dealing with this Warrant as the absolute
owner hereof for any purposes and as the person entitled to exercise the rights
represented by this Warrant, or to the transfer hereof on the books of the
Corporation, any notice to the contrary notwithstanding; but until each transfer
on such books, the Corporation may treat the registered holder hereof as the
owner hereof for all purposes.

                    SECTION 8. Exchange of Warrant. This Warrant is exchangeable
upon the surrender hereof by the Holder at the office or agency of the
Corporation designated in Section 2 hereof, for new Warrants of like tenor
representing in the aggregate the rights to subscribe for and purchase the
number of shares that may be subscribed for and purchased hereunder, each of
such new Warrants to represent the right to subscribe for and purchase such
number of shares as shall be designated by said holders hereof at the time of
such surrender.

                    SECTION 9. Lost, Stolen, Mutilated or Destroyed Warrant. If
this Warrant is lost, stolen, mutilated or destroyed, the Corporation may, on
such terms as to indemnify or otherwise as it may in its discretion impose
(which shall, in the case of a mutilated Warrant, include the surrender
thereof), issue a new Warrant of like denomination and tenor as the Warrant so
lost, stolen, mutilated or destroyed. Any such new Warrant shall constitute an
original contractual obligation of the Corporation, whether or not the allegedly
lost, stolen, mutilated or destroyed Warrant shall be at any time enforceable by
anyone.

                    SECTION 10. Amendment, Waiver. This Warrant and any term
hereof may be amended, waived, discharged or terminated only by an instrument in
writing signed by the party against which enforcement of the change, waiver,
discharge or termination is sought.

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                    SECTION 11. Governing Law. This Warrant shall be governed
and interpreted in accordance with the laws of the State of Delaware.

                    IN WITNESS WHEREOF, INTERACTIVE KNOWLEDGE, INC. has caused
this Warrant to be executed by its duly authorized officers under its corporate
seal, and this Warrant to be dated as of the date first set forth above.

                                       INTERACTIVE KNOWLEDGE, INC.

                                       By:  /s/ TIMOTHY R. SCHIEWE
                                            -----------------------------------
                                            Timothy R. Schiewe, President

ATTEST:

/s/ DONNA BURK
---------------------
Donna Burk, Secretary

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                                                                   EXHIBIT 10.23

THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR
OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT
OR PURSUANT TO RULE 144 OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE
CORPORATION AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.

                            WARRANT TO PURCHASE STOCK

Corporation:      Interactive Knowledge, Inc., a Delaware corporation
Number of Shares: 20,625
Class of Stock:   Series A Preferred
Initial Exercise Price:    $1.00 per share
Issue Date:       March 15, 1999
Expiration Date:  March 15, 2006

         THIS WARRANT CERTIFIES THAT, for the agreed upon value of $1.00 and for
other good and valuable consideration, SILICON VALLEY BANK ("Holder") is
entitled to purchase the number of fully paid and nonassessable shares of the
class of securities (the "Shares") of the corporation (the "Company") at the
initial exercise price per Share (the "Warrant Price") all as set forth above
and as adjusted pursuant to Article 2 of this Warrant, subject to the provisions
and upon the terms and conditions set forth in this Warrant.

ARTICLE 1.  EXERCISE.

         1.1 Method of Exercise. Holder may exercise this Warrant by delivering
a duly executed Notice of Exercise in substantially the form attached as
Appendix 1 to the principal office of the Company. Unless Holder is exercising
the conversion right set forth in Section 1.2, Holder shall also deliver to the
Company a check for the aggregate Warrant Price for the Shares being purchased.

         1.2 Conversion Right. In lieu of exercising this Warrant as specified
in Section 1.1, Holder may from time to time convert this Warrant, in whole or
in part, into a number of Shares determined by dividing (a) the aggregate fair
market value of the Shares or other securities otherwise issuable upon exercise
of this Warrant minus the aggregate Warrant Price of such Shares by (b) the fair
market value of one Share. The fair market value of the Shares shall be
determined pursuant to Section 1.4.

         1.3 Intentionally Omitted.

         1.4 Fair Market Value. If the Shares are traded in a public market, the
fair market value of the Shares shall be the closing price of the Shares (or the
closing price of the Company's stock into which the Shares are convertible)
reported for the business day immediately before Holder delivers its Notice of
Exercise to the Company. If the Shares are not traded in a public market, the
Board of Directors of the Company shall determine fair market value in its
reasonable good faith judgment. The foregoing notwithstanding, if Holder advises
the Board of Directors in writing that Holder disagrees with such determination,
then the Company and Holder shall promptly agree upon a reputable investment
banking firm to undertake such valuation. If the valuation of such investment
banking firm is greater than that determined by the Board of Directors, then all
fees and expenses of such investment banking firm shall be paid by the Company.
In all other circumstances, such fees and expenses shall be paid by Holder.

         1.5 Delivery of Certificate and New Warrant. Promptly after Holder
exercises or converts this Warrant, the Company shall deliver to Holder
certificates for the Shares acquired and, if this Warrant has not been fully
exercised or converted and has not expired, a new Warrant representing the
Shares not so acquired.

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         1.6 Replacement of Warrants. On receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and, in the case of loss, theft or destruction, on delivery of an
indemnity agreement reasonably satisfactory in form and amount to the Company
or, in the case of mutilation, on surrender and cancellation of this Warrant,
the Company at its expense shall execute and deliver, in lieu of this Warrant, a
new warrant of like tenor.

         1.7 Repurchase on Sale, Merger, or Consolidation of the Company.

                  1.7.1 "Acquisition." For the purpose of this Warrant,
"Acquisition" means any sale, license, or other disposition of all or
substantially all of the assets of the Company, or any reorganization,
consolidation, or merger of the Company where the holders of the Company's
securities before the transaction beneficially own less than 50% of the
outstanding voting securities of the surviving entity after the transaction.

                  1.7.2 Assumption of Warrant. Upon the closing of any
Acquisition the successor entity shall assume the obligations of this Warrant,
and this Warrant shall be exercisable for the same securities, cash and property
as would be payable for the Shares issuable upon exercise of the unexercised
portion of this Warrant as if such Shares were outstanding on the record date
for the Acquisition and subsequent closing. The Warrant Price shall be adjusted
accordingly.

                  1.7.3 Purchase Right. Notwithstanding the foregoing, at the
election of Holder, the Company shall purchase the unexercised portion of this
Warrant for cash upon the closing of any Acquisition (where the consideration is
cash or cash equivalents) for an amount equal to (a) the fair market value of
any consideration that would have been received by Holder in consideration of
the Shares had Holder exercised the unexercised portion of this Warrant
immediately before the record date for determining the shareholders entitled to
participate in the proceeds of the Acquisition, less (b) the aggregate Warrant
Price of the Shares, but in no event less than zero.

ARTICLE 2.  ADJUSTMENTS TO THE SHARES.

         2.1 Stock Dividends, Splits, Etc. If the Company declares or pays a
dividend on its common stock (or the Shares if the Shares are securities other
than common stock) payable in common stock, or other securities, subdivides the
outstanding common stock into a greater amount of common stock, or, if the
Shares are securities other than common stock, subdivides the Shares in a
transaction that increases the amount of common stock into which the Shares are
convertible, then upon exercise of this Warrant, for each Share acquired, Holder
shall receive, without cost to Holder, the total number and kind of securities
to which Holder would have been entitled had Holder owned the Shares of record
as of the date the dividend or subdivision occurred.

         2.2 Reclassification, Exchange or Substitution. Upon any
reclassification, exchange, substitution, or other event that results in a
change of the number and/or class of the securities issuable upon exercise or
conversion of this Warrant, Holder shall be entitled to receive, upon exercise
or conversion of this Warrant, the number and kind of securities and property
that Holder would have received for the Shares if this Warrant had been
exercised immediately before such reclassification, exchange, substitution, or
other event. Such an event shall include any automatic conversion of the
outstanding or issuable securities of the Company of the same class or series as
the Shares to common stock pursuant to the terms of the Company's Articles of
Incorporation upon the closing of a registered public offering of the Company's
common stock. The Company or its successor shall promptly issue to Holder a new
Warrant for such new securities or other property. The new Warrant shall provide
for adjustments which shall be as nearly equivalent as may be practicable to the
adjustments provided for in this Article 2 including, without limitation,
adjustments to the Warrant Price and to the number of securities or property

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<PAGE>   3

issuable upon exercise of the new Warrant. The provisions of this Section 2.2
shall similarly apply to successive reclassifications, exchanges, substitutions,
or other events.

         2.3 Adjustments for Combinations, Etc. If the outstanding Shares are
combined or consolidated, by reclassification or otherwise, into a lesser number
of shares, the Warrant Price shall be proportionately increased.

         2.4 Adjustments for Diluting Issuances. Without duplicating any
adjustment under Section 2.2, the Warrant Price and the number of Shares
issuable upon exercise of this Warrant or, if the Shares are Preferred Stock,
the number of shares of common stock issuable upon conversion of the Shares,
shall be subject to adjustment, from time to time in the manner set forth in the
Company's Restated Certificate of Incorporation.

         2.5 No Impairment. The Company shall not, by amendment of its Articles
of Incorporation or through a reorganization, transfer of assets, consolidation,
merger, dissolution, issue, or sale of securities or any other voluntary action,
avoid or seek to avoid the observance or performance of any of the terms to be
observed or performed under this Warrant by the Company, but shall at all times
in good faith assist in carrying out of all the provisions of this Article 2 and
in taking all such action as may be necessary or appropriate to protect Holder's
rights under this Article against impairment. If the Company takes any action
affecting the Shares or its common stock other than as described above that
adversely affects Holder's rights under this Warrant, the Warrant Price shall be
adjusted downward and the number of Shares issuable upon exercise of this
Warrant shall be adjusted upward in such a manner that the aggregate Warrant
Price of this Warrant is unchanged.

         2.6 Fractional Shares. No fractional Shares shall be issuable upon
exercise or conversion of the Warrant and the number of Shares to be issued
shall be rounded down to the nearest whole Share. If a fractional share interest
arises upon any exercise or conversion of the Warrant, the Company shall
eliminate such fractional share interest by paying Holder amount computed by
multiplying the fractional interest by the fair market value of a full Share.

         2.7 Certificate as to Adjustments. Upon each adjustment of the Warrant
Price, the Company at its expense shall promptly compute such adjustment, and
furnish Holder with a certificate of its Chief Financial Officer setting forth
such adjustment and the facts upon which such adjustment is based. The Company
shall, upon written request, furnish Holder a certificate setting forth the
Warrant Price in effect upon the date thereof and the series of adjustments
leading to such Warrant Price.

ARTICLE 3.  REPRESENTATIONS AND COVENANTS OF THE COMPANY.

         3.1 Representations and Warranties. The Company hereby represents and
warrants to the Holder as follows:

                  (a) The initial Warrant Price referenced on the first page of
this Warrant is not greater than (i) the price per share at which the Shares
were last issued in an arms-length transaction in which at least $500,000 of the
Shares were sold and (ii) the fair market value of the Shares as of the date of
this Warrant.

                  (b) All Shares which may be issued upon the exercise of the
purchase right represented by this Warrant, and all securities, if any, issuable
upon conversion of the Shares, shall, upon issuance, be duly authorized, validly
issued, fully paid and nonassessable, and free of any liens and encumbrances
except for restrictions on transfer provided for herein or under applicable
federal and state securities laws.

                                       3
<PAGE>   4

                  (c) The Capitalization Table attached to this Warrant is true
and complete as of the Issue Date.

         3.2 Notice of Certain Events. If the Company proposes at any time (a)
to declare any dividend or distribution upon its common stock, whether in cash,
property, stock, or other securities and whether or not a regular cash dividend;
(b) to offer for subscription pro rata to the holders of any class or series of
its stock any additional shares of stock of any class or series or other rights;
(c) to effect any reclassification or recapitalization of common stock; (d) to
merge or consolidate with or into any other corporation, or sell, lease,
license, or convey all or substantially all of its assets, or to liquidate,
dissolve or wind up; or (e) offer holders of registration rights the opportunity
to participate in an underwritten public offering of the company's securities
for cash, then, in connection with each such event, the Company shall give
Holder (1) at least 20 days prior written notice of the date on which a record
will be taken for such dividend, distribution, or subscription rights (and
specifying the date on which the holders of common stock will be entitled
thereto) or for determining rights to vote, if any, in respect of the matters
referred to in (c) and (d) above; (2) in the case of the matters referred to in
(c) and (d) above at least 20 days prior written notice of the date when the
same will take place (and specifying the date on which the holders of common
stock will be entitled to exchange their common stock for securities or other
property deliverable upon the occurrence of such event); and (3) in the case of
the matter referred to in (e) above, the same notice as is given to the holders
of such registration rights.

         3.3 Information Rights. So long as the Holder holds this Warrant and/or
any of the Shares, the Company shall deliver to the Holder when and as delivered
to Holders of the Company's Series A Preferred Stock, copies of all information
and materials that the Company is required to deliver to any holder of such
Series A Preferred Stock pursuant to the Company's Investors' Rights Agreement.

         3.4 Registration Under Securities Act of 1933, as amended. The Company
agrees that, if the Shares are convertible into common stock of the Company,
such common stock shall be subject to the registration rights set forth on
Exhibit B, if attached.

ARTICLE 4.  MISCELLANEOUS.

         4.1 Term; Notice of Expiration. This Warrant is exercisable, in whole
or in part, at any time and from time to time on or before the Expiration Date
set forth above.

         4.2 Legends. This Warrant and the Shares (and the securities issuable,
directly or indirectly, upon conversion of the Shares, if any) shall be
imprinted with a legend in substantially the following form:

             THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
             1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE
             TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH
             ACT OR PURSUANT TO RULE 144 OR AN OPINION OF COUNSEL REASONABLY
             SATISFACTORY TO THE CORPORATION AND ITS COUNSEL THAT SUCH
             REGISTRATION IS NOT REQUIRED.

         4.3 Compliance with Securities Laws on Transfer. This Warrant and the
Shares issuable upon exercise this Warrant (and the securities issuable,
directly or indirectly, upon conversion of the Shares, if any) may not be
transferred or assigned in whole or in part without compliance with applicable
federal and state securities laws by the transferor and the transferee
(including, without limitation, the delivery of investment representation
letters and legal opinions reasonably satisfactory to the Company, as reasonably
requested by the Company). The Company shall not require Holder to provide an
opinion of counsel if the transfer is to an affiliate

                                       4
<PAGE>   5
of Holder or if there is no material question as to the availability of current
information as referenced in Rule 144(c), Holder represents that it has complied
with Rule 144(d) and (e) in reasonable detail, the selling broker represents
that it has complied with Rule 144(f), and the Company is provided with a copy
of Holder's notice of proposed sale.

         4.4 Transfer Procedure. Subject to the provisions of Section 4.3 Holder
may transfer all or part of this Warrant or the Shares issuable upon exercise of
this Warrant (or the securities issuable, directly or indirectly, upon
conversion of the Shares, if any) at any time to Silicon Valley Bancshares or
The Silicon Valley Bank Foundation, or to any affiliate of Holder, or, to any
other transferree by giving the Company notice of the portion of the Warrant
being transferred setting forth the name, address and taxpayer identification
number of the transferee and surrendering this Warrant to the Company for
reissuance to the transferee(s) (and Holder if applicable). Unless the Company
is filing financial information with the SEC pursuant to the Securities Exchange
Act of 1934, the Company shall have the right to refuse to transfer any portion
of this Warrant to any person who directly competes with the Company.

         4.5 Notices. All notices and other communications from the Company to
the Holder, or vice versa, shall be deemed delivered and effective when given
personally or mailed by first-class registered or certified mail, postage
prepaid, at such address as may have been furnished to the Company or the
Holder, as the case may be, in writing by the Company or such holder from time
to time. All notices to be provided under this Warrant shall be send to the
following address:

                  Silicon Valley Bank
                  Attn: Treasury Department
                  3003 Tasman Drive
                  Santa Clara, CA 95054

         4.6 Waiver. This Warrant and any term hereof may be changed, waived,
discharged or terminated only by an instrument in writing signed by the party
against which enforcement of such change, waiver, discharge or termination is
sought.

         4.7 Attorneys Fees. In the event of any dispute between the parties
concerning the terms and provisions of this Warrant, the party prevailing in
such dispute shall be entitled to collect from the other party all costs
incurred in such dispute, including reasonable attorneys' fees.

         4.8 Governing Law. This Warrant shall be governed by and construed in
accordance with the laws of the State of California, without giving effect to
its principles regarding conflicts of law.

                                    "COMPANY"

                                    Interactive Knowledge, Inc.

                                    By:      /s/ T R Schiewe

                                    Name:    Timothy R. Schiewe
                                         -------------------------------
                                             (Print)

                                    Title:  President

                                    By:      /s/ DONNA BURK

                                    Name:    Donna Burk
                                         -------------------------------

                                    Title:  Secretary

                                       5
<PAGE>   6

                                    By:     /s/ Donna Burk
                                         -------------------------------
                                    Name:   Donna Burk
                                    Title:  Secretary

                                       6
<PAGE>   7

                                   APPENDIX 1

                               NOTICE OF EXERCISE

         1. The undersigned hereby elects to purchase __________ shares of the
Common/Preferred Series ____ [Strike one] Stock of Interactive Knowledge, Inc.
pursuant to the terms of the attached Warrant, and tenders herewith payment of
the purchase price of such shares in full.

         1. The undersigned hereby elects to convert the attached Warrant into
Shares/cash [strike one] in the manner specified in the Warrant. This conversion
is exercised with respect to ___________ of the Shares covered by the Warrant.

         [Strike paragraph that does not apply.]

         2. Please issue a certificate or certificates representing said shares
in the name of the undersigned or in such other name as is specified below:

                    ---------------------------------------
                           (Name)

                    ---------------------------------------

                    ---------------------------------------
                           (Address)

         3. The undersigned represents it is acquiring the shares solely for its
own account and not as a nominee for any other party and not with a view toward
the resale or distribution thereof except in compliance with applicable
securities laws.

                                   ---------------------------------------
                                               (Signature)

-------------------------
         (Date)

<PAGE>   8

                                    EXHIBIT B

                               Registration Rights

         Common stock issuable upon conversion of the Shares, shall be deemed
"registrable securities" or otherwise entitled to "piggy back" registration
rights in accordance with the terms of the Investors' Rights Agreement between
the Company and holders of the Series A Preferred Stock, dated August 20, 1998,
as amended (the "Agreement").

         By acceptance of the Warrant to which this Exhibit B is attached,
Holder shall have the rights of a "Holder" (as defined in the Agreement) and be
subject to the restrictions on such a "Holder" under Article 2 of the Agreement,
other than Section 2.11; provided, that Holder shall have the right to
participate in a demand registration under Section 2.2 of the Agreement only if
persons who are Holders under the Agreement satisfy the 30% requirement of
Section 2.2(a). If the Agreement is amended pursuant to Section 2.11 and such
amendment would have an adverse impact on the Holder's registration rights
thereunder Holder will not be bound by such amendment without Holder's consent.
Holder shall not be a party to, or have any other rights granted to the parties
of the Agreement.

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