Document:

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                                                                   Exhibit 10.24

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[LOGO OF NETRATINGS]
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890 Hillview Ct., Suite 300
Milpitas, CA  95035

November 1, 2001

William Pulver

Dear Bill,

This letter sets forth our agreement with respect to the terms of your
employment with NetRatings, Inc. (the "Company"). We are pleased that you will
be serving as our President and Chief Operating Officer through the date of the
closing of our proposed acquisitions (the "Acquisitions") of Jupiter Media
Metrix, Inc. and ACNielson eRatings, Inc. ("eRatings") and assuming the position
of Chief Executive Officer of the Company upon the closing of the Acquisitions.

1.   Base Cash Compensation. You shall be compensated at the base rate of
     $29,166 per month (which equates to $350,000.00 on an annual basis),
     payable at the same frequency as payroll is distributed to other Company
     employees.

2.   Bonus. You will be eligible for a bonus to be awarded in the discretion of
     the Board of Directors. Your target bonus shall be $250,000 per annum. For
     the remainder of calendar year 2001, you shall be guaranteed payment of at
     least one-half of your target bonus, pro-rated to reflect your employment
     start date of November 1, 2001. For calendar year 2002, you shall be
     guaranteed payment of at least one-half of your target bonus, to be
     prorated if your employment is terminated by the Company for other than
     cause during the course of the year. Your bonus shall be paid at such times
     during the course of the year as bonuses are paid to Company executives
     generally.

3.   Stock Option Grant. You will be granted an option to purchase 600,000
     shares of the Company's common stock at an exercise price equal to the fair
     market value of such common stock as of the date of grant. These options
     will vest, commencing on the date you start full time employment for the
     Company, as follows: 1/4 after twelve months and then ratably on a monthly
     basis over the balance of a total 48 month vesting period.

4.   Benefits. You will also be eligible for health insurance and other
     Company-provided benefits in accordance with the terms of these benefit
     plans in effect from time to time.

5.   Expense Reimbursement. The Company shall reimburse you in accordance with
     the Company's policies from time to time in effect for reasonable travel
     and other

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     reasonable business expenses incurred by you on behalf of the Company in
     the performance of your duties under this Agreement.

6.   "At Will". As is standard practice, all employment at the Company is
     terminable at will. This means that you will be free to end your employment
     with the Company at any time for any reason or for no reason. Similarly,
     the Company may end your employment at any time for any reason, with or
     without cause. This "at will" nature of your employment may not be changed
     except in writing signed by you and the Chairman of the Board of the
     Company.

7.   Severance Payment. Subject to the provisions below, if your employment with
     the Company terminates as a result of an Involuntary Termination (i) you
     shall be paid twelve months' of your Total Annual Earnings as in effect as
     of the date of such termination (with such payments made over the following
     twelve months in accordance with normal Company payroll practices) and (ii)
     the vesting on that number of shares as would have vested had you remained
     employed with the Company over the twelve (12) month period following the
     Involuntary Termination shall accelerate and such shares shall become fully
     vested and immediately exercisable and shall remain exercisable for the
     period prescribed in the stock option agreement covering such shares.

     (a) If you voluntarily resign from the Company (and such resignation is not
     an Involuntary Termination) or if the Company terminates your employment
     for Cause, then you shall not be entitled to receive severance or other
     benefits except for those (if any) as may then be established under the
     Company's then existing benefit plans at the time of such termination.

     (b) You shall not be entitled to any of the benefits described in this
     Section unless and until you, in consideration for such benefits, executes
     a release of claims in a form satisfactory to the Company; provided,
     however, that such release shall not apply to any right of you to be
     indemnified by the Company.

     (c) The following terms referred to in this Agreement shall have the
     following meanings:

     Cause. "Cause" shall mean: (i) any act of personal dishonesty taken by you
     in connection with your responsibilities as an employee which is intended
     to result in substantial personal enrichment of you; (ii) your conviction
     of a felony which the Board reasonably believes has had or will have a
     material detrimental effect on the Company's reputation or business; (iii)
     a willful act by you which constitutes misconduct and is injurious to the
     Company; and (iv) continued willful violations by you of your obligations
     to the Company after there has been delivered to you a written demand for
     performance from the Company which describes the basis for the Company's
     belief that you has not substantially performed his duties.

     Involuntary Termination. "Involuntary Termination" shall mean (i) without
     your express written consent, the reduction of your duties which results in
     a significant

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     diminution of your position or responsibilities with the Company, or the
     removal of you from your employment position in the Company other than for
     Cause; (ii) without your express written consent, a material reduction by
     the Company in your total cash compensation as in effect immediately prior
     to such reduction; (iii) without your express written consent, a material
     reduction by the Company in the kind or level of employee benefits to which
     you are entitled immediately prior to such reduction with the result that
     your overall benefits package is significantly reduced; or (iv) your death
     or Disability (as defined below); or (v) any breach by the Company of any
     material provision of this Agreement.

     Disability. "Disability" shall mean your inability to perform your duties
     as an employee of the Company as the result of your incapacity due to
     physical or mental illness, and such inability, at least 26 weeks after its
     commencement, is determined to be total and permanent by a physician
     selected by the Company or its insurers and reasonably acceptable to you
     (or your legal representative).

     Total Annual Earnings. "Total Annual Earnings" means the sum of your annual
     salary and targeted annual incentive bonus, as in effect immediately prior
     to the date of your termination of employment with the Company.

8.   Arbitration. The Company and you agree that any dispute or controversy
     arising out of or relating to any interpretation, construction, performance
     or breach of this Agreement shall be settled by arbitration to be held in
     Santa Clara County, California, in accordance with the National Rules for
     the Resolution of Employment Disputes then in effect of the American
     Arbitration Association. The decision of the arbitrator shall be final,
     conclusive and binding on the parties to the arbitration. Judgment may be
     entered on the arbitrator's award in any court having jurisdiction.

9.   No Assignment of Benefits. Your rights to payments or benefits under this
     Agreement shall not be made subject to option or assignment, either by
     voluntary or involuntary assignment or by operation of law, including
     (without limitation) bankruptcy, garnishment, attachment or other
     creditor's process, and any action in violation of this Section shall be
     void.

10.  Employment Taxes. Payments made pursuant to this Agreement shall be subject
     to withholding of applicable income and employment taxes.

11.  Other.

     (a) The Company is committed to the highest standards of integrity and to
     treating our customers, employees, fellow workers, business partners and
     competitors in good faith and fair dealing. We expect employees to share
     the same standard and values. Because our proprietary and confidential
     information is among our most important assets, we must ask, as a condition
     of your employment, that you sign the attached Confidentiality and
     Assignment of

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     Inventions Agreement and return it along with a signed copy of this letter.
     By accepting this offer, you agree that throughout your employment, you
     will observe all of the Company's rules governing conduct of our business
     and employees, including our policies protecting employees from illegal
     discrimination and harassment.

     (b) You will also be required to complete an I-9 form that verifies your
     work eligibility. This form is required by the Immigration & Naturalization
     Service and will be given to you on your first day of employment.

     (c) Employment with Company is a full-time job, requiring your complete
     commitment. You may not compete with Company or work for any competing
     entity, and you must obtain permission in advance from Company before
     accepting any outside employment or board membership of any kind.

12.  Entire Agreement and Release. This letter and the Company's confidentiality
     agreement constitutes the full terms and conditions of your employment with
     the Company and its subsidiaries. It supercedes any other oral or written
     promises that may have been made to you outside of this letter, as well as
     any agreement or arrangement which you may have had with eRatings. In
     signing this letter, you confirm that you have no claims or causes of
     action against eRatings or the Company of any kind or nature and release
     eRatings and the Company and their directors, officers, employees,
     affiliates and agents from any liability with respect to any claim or cause
     of action which may have accrued prior to the date hereof. You acknowledge
     that the Company is relying upon this representation in part in proceeding
     with the Acquisition.

I am delighted to extend this offer to you and look forward to an exciting and
mutually rewarding business association. Please indicate your acceptance of this
offer by signing this letter below and returning it to me. A copy is enclosed
for your records.

Sincerely yours,

NetRatings, Inc.                       ACCEPTED AND AGREED TO:

By
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                                       Date:
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                                                                   EXHIBIT 10.25

                                NETRATINGS, INC.

                           STOCK REPURCHASE AGREEMENT

         This agreement (the "Agreement") is made as of the ____ day of December
                              ---------
2001 between NetRatings, Inc., a Delaware corporation (the "Company"), and David
                                                            -------
J. Toth (the "Stockholder").

                                    RECITALS

         A.     Stockholder is currently employed by the Company as its Chief
Executive Officer.

         B.     In connection with the transition of the Stockholder's role with
the Company, the Company and Stockholder have agreed that Stockholder shall have
the right to sell to the Company, and the Company shall be obligated to
purchase, up to 1,000,000 shares of the Company's Common Stock in accordance
with the terms and conditions set forth herein.

         NOW, THEREFORE, the parties agree as follows:

         1.       Repurchase of Stock.
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                  Beginning on the third day following the closing date for the
Company's acquisition of Jupiter Media Metrix, Inc. or the third day following
the date of termination for any reason of the Company's proposed acquisition of
Jupiter Media Metrix, Inc. (the "Effective Date") and from time to time or at
any time or times until the close of business on date ninety-three (93) days
following the Effective Date (the "Contract Period"), Stockholder shall have the
right to cause the Company to purchase (the "Stockholder Put Right"), and the
Company shall purchase, up to a total of One Million (1,000,000) shares of the
Company's Common Stock (the "Shares") held by Stockholder at the time of
exercise of the Stockholder Put Right. The Stockholder Put Right shall be
subject to the following requirements:

                           (i)     The Stockholder Put Right may be exercised by
Stockholder not more than twice during the Contract Period, and in the case of
any exercise may not be exercised for fewer than 100,000 Shares.

                           (ii)    The Stockholder Put Right may be exercised by
delivery by Stockholder to the Company, attention of the Chief Financial
Officer, of a written notice stating the number of Shares that are included in
the Stockholder Put Right. The delivery date of the notice to the Company shall
be deemed to be the exercise date of the Stockholder Put Right (the "Exercise
Date").

                           (iii)   The purchase price for the Shares payable by
the Company upon any exercise of the Stockholder Put Right shall be equal to the
average closing sales price for the

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Company's Common Stock as reported by the Nasdaq Stock Market for the ten (10)
trading days preceding and ending on the last trading date preceding the
Exercise Date.

                           (iv)   The purchase price for the Shares shall be
paid to Stockholder by Federal (same day) or other immediately available funds
to the account of Stockholder not later than fifteen (15) days following the
Exercise Date.

                           (v)    In connection with any exercise of the
Stockholder Put Right, Stockholder agrees that the Company shall have no
obligation to provide to Stockholder any information concerning the Company or
its affairs. Stockholder shall rely solely on the Company's public filings with
the Securities and Exchange Commission.

                           (vi)   As a condition to payment of the purchase
price for the Shares, Stockholder shall be obligated to deliver to the Company
(i) a stock certificate representing the Shares, duly endorsed for transfer (or
appropriate confirmation of transfer if the certificates are in electronic
form); (ii) a writing signed by Stockholder confirming the truth and accuracy of
the representations of Stockholder as set forth in Section 2 below as of the
date of transfer and (iii) a spousal consent in form and substance reasonably
satisfactory to the Company.

                           (vii)  Notwithstanding anything to the contrary set
forth herein, the Company's obligation to repurchase the Shares at any time
shall be subject to there being no law or regulation applicable to the Company
that prohibits such repurchase at the time of the proposed transaction,
including, but not limited to, there being undisclosed material inside
information. If a law or regulation prohibits repurchase, then the Contract
Period shall be extended by one day for each day during which the repurchase
cannot be effected.

         2.       Stockholder's Representations.
                  -----------------------------

                  In connection with the Company's repurchase of the Shares,
Stockholder hereby represents and warrants to the Company as follows:

                  (a)      Right, Title, and Interest. Stockholder is the lawful
                           --------------------------
owner of the Shares and has full right, title, and interest in and to the
Shares, subject to no lien, encumbrance, or preemptive right that would impair
Stockholder's right or ability to transfer the Shares to the Company.

                  (b)      Authority. Stockholder has all requisite legal
                           ---------
authority to execute and deliver this Agreement, to sell and deliver the Shares,
and to carry out and perform all of Stockholder's obligations under this
Agreement.

                  (c)      Consents. No consent, approval, order, or
                           --------
authorization of, or registration, qualification, designation, declaration, or
filing of or with any governmental authority or third party is required in
connection Stockholder's sale of the Shares to the Company or with the
consummation of the transactions contemplated by this Agreement.

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                  (d)      No Legal, Tax or Investment Advice. Stockholder has
                           ----------------------------------
consulted such legal, tax, and investment advisors as Stockholder, in his sole
discretion, has deemed necessary or appropriate in connection with the sale of
the Shares hereunder. Stockholder acknowledges that he shall be responsible for
his own tax liability that may arise as a result of its sale of the Shares to
the Company or the transactions contemplated by this Agreement.

         3.       Restrictions on Sales.
                  ---------------------

                  (a)      Restriction. Stockholder agrees that he shall not,
                           -----------
without the Company's prior written consent, directly or indirectly, make any
offer, sale, assignment, transfer, encumbrance, contract to sell, grant of an
option to purchase or other disposition of any Company Common Stock beneficially
owned (within the meaning of Rule 13d-3 under the Securities Exchange Act of
1934, as amended) by the Stockholder on the date hereof or hereafter acquired
for a period from the date of this Agreement through and including the earlier
of the date (i) ninety (90) days following the final exercise of the Stockholder
Put Right or (ii) six (6) months following the Effective Date.

                  (b)      Exclusion. The restrictions set forth in paragraph
                           ---------
(a) of this Section shall not apply to (i) any transfer of Common Stock to a
non-affiliate of the Company if as a result of such transfer, the shares will be
considered "restricted securities' for the purposes of Rule 144 with a new
holding period for the transferee as of the date of transfer or (ii) any
transfers of Common Stock as a gift if the recipient receiving such Common Stock
executes an agreement in form and substance reasonably satisfactory to the
Company confirming such recipient's agreement to be bound by the provisions of
this Section.

         4.       Successors.
                  ----------

                  (a)      Company's Successors. Any successor to the Company
                           --------------------
(whether direct or indirect and whether by purchase, lease, merger,
consolidation, liquidation or otherwise) to all or substantially all of the
Company's business and assets shall assume the Company's obligations under this
Agreement.

                  (b)      Stockholder's Successors. Without the written consent
                           ------------------------
of the Company, Stockholder shall not assign or transfer this Agreement or any
right or obligation under this Agreement to any other person or entity.
Notwithstanding the foregoing, the terms of this Agreement and all rights of
Stockholder hereunder shall inure to the benefit of, and be enforceable by,
Stockholder's personal or legal representatives, executors, administrators,
successors, heirs, distributes, devisees and legatees.

         5.       Governing Law.
                  -------------

                  This Agreement will be governed by and construed under the
laws of the State of California.

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         6.       Attorneys' Fees.
                  ---------------

                  The prevailing party in any legal action arising out of this
Agreement will be entitled in addition to any other rights and remedies such
party may have to reimbursement for its expenses, including costs and attorneys'
fees.

         7.       Entire Agreement.
                  ----------------

                  This Agreement constitutes the full and entire understanding
between Stockholder and the Company with regard to the subject matter hereof.
Neither the Company nor Stockholder shall be liable or bound to the other in any
manner by any representations, warranties, or covenants except as specifically
set forth herein.

         8.       Notices.
                  -------

                  Any notice required or permitted hereunder will be given in
writing and will be deemed effectively given upon personal delivery or upon
confirmed delivery by messenger or overnight delivery service, addressed, if to
Stockholder, at his address shown on the Company's records and, if to the
Company, at the address of its principal corporate offices (attention: Chief
Financial Officer), or at such other address as such party may designate by ten
days' advance written notice to the other party.

         9.       Termination.
                  -----------

                  This Agreement shall terminate and be of no further force and
effect after the expiration of the period set forth in Section 3.

         10.      Counterparts.
                  ------------

                  This Agreement may be executed in any number of counterparts,
each of which will be enforceable against the parties actually executing such
counterparts and all of which together will constitute one instrument.

                  [remainder of page intentionally left blank]

                                      -4-

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         IN WITNESS WHEREOF, the parties hereto have executed this Stock
Repurchase Agreement as of the day and year first above written.

"COMPANY"                                  NETRATINGS, INC.
                                           a Delaware corporation

                                           By:
                                              ----------------------------------

                                           Name:
                                                --------------------------------

                                           Title:
                                                 -------------------------------

"STOCKHOLDER"
                                           -------------------------------------
                                           David J. Toth

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