Exhibit 3.1

RESTATED CERTIFICATE OF INCORPORATION    OF    NETRATINGS, INC.

Jason L. Gray, Assistant Secretary of NetRatings, Inc., a corporation organized and existing under the General Corporation Law of the State of Delaware, in
accordance with the provisions of Section 242 and 245 thereof, DOES HEREBY CERTIFY:

FIRST:
That the name of this Corporation is NetRatings, Inc. (the "Corporation") and that the original Certificate of Incorporation of the Corporation was filed with the Secretary of
State of the State of Delaware on July 2, 1997.

SECOND:
That the Amendment and Restatement of the Corporation's Certificate of Incorporation set forth in the following resolution has been approved by the Corporation's Board of
Directors and stockholders and was duly adopted in accordance with the provisions of Section 242 and 245 of the General Corporation Law of the State of Delaware:

NOW,
THEREFORE, BE IT RESOLVED, that the Certificate of Incorproation of this Corporation be, and it hereby is, restated and further amended to read in its entirety as follows:

ARTICLE I

The name of the Corporation is NetRatings, Inc.

ARTICLE II

The address of the Corporation's registered office in the State of Delaware is 1209 Orange Street, Wilmington, Delaware 19801, County of New Castle. The name of
its registered agent at such address is The Corporation Trust Company.

ARTICLE III

The nature of the business and of the purposes to be conducted and promoted by the Corporation are to conduct any lawful business, to promote any lawful purpose,
and to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of Delaware.

ARTICLE IV

(A)  Thc
Corporation is authorized to issue two classes of shares, designated "Common Stock" and "Preferred Stock," respectively. The number of shares of Common Stock
authorized to be issued is 200,000,000 shares, $0.001 par value per share, and the number of shares of Preferred Stock authorized to be issued is 5,000,000 shares, $0.001 par value per share.

(B)  The
Preferred Stock authorized by this Certificate of Incorporation may be issued from time to time in one or more series. The Board of Directors is authorized to
determine, alter or eliminate any or all of the rights, preferences, privileges and restrictions granted to or imposed upon any wholly unissued series of Preferred Stock, and to fix, increase or
decrease the number of shares comprising any such series and the designation thereof, or any of them, and to provide for the rights and terms of redemption or conversion of the shares of any such
series.

ARTICLE V

(A)  The
number of directors constituting the entire Board of Directors shall be fixed, from time to time exclusively by the Board of Directors pursuant to a resolution
adopted by a majority of the entire Board of Directors; provided, however, that the number of directors shall not be reduced so as to shorten the term of any director at the time in office.

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(B)  Unless
the Board of Directors determines otherwise, newly created directorships resulting from any increase in the authorized number of directors or any vacancies on the
Board of Directors resulting from death, resignation, retirement, disqualification, removal from office or other cause shall be filled by a majority vote of the directors then in office, although less
than a quorum, and directors so chosen shall hold office for a term expiring at the annual meeting of stockholders at which the term of office of the class to which they have been elected expires and
until such directors' successors shall have been duly elected and qualified.

ARTICLE VI

The following provisions are inserted for the management of the business and the conduct of the affairs of the Corporation, and for further definition, limitation
and regulation of the powers of the Corporation and its directors and stockholders:

(A)  The
business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors. In addition to the powers and authority expressly
conferred upon them by statute or by this Certificate of Incorporation or the Bylaws of the Corporation, the directors are hereby empowered to exercise all such powers and do all such acts and things
as may be exercised or done by the Corporation.

(B)  The
directors of the Corporation need not be elected by written ballot unless the Bylaws so provide.

(C)  On
and after the closing of the first sale of the Corporation's Common Stock pursuant to a firmly underwritten registered initial public offerring ("IPO") any action
required or permitted to be taken by the stockholders of the Corporation must be effected at a duly called annual or special meeting of stockholders of the Corporation and may not be effected by any
consent in writing by such stockholders. Prior to the IPO, unless otherwise provided by law, any action which may otherwise be taken at any meeting of the stockholders may be taken without a meeting
and without prior notice. If a written consent describing such actions is signed by the holders of outstanding shares having not less than the minimum number of votes which would be necessary to
authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted.

(D)  Special
meetings of stockholders of the Corporation may be called only by the Board of Directors pursuant to a resolution adopted by a majority of the total number of
authorized directors (whether or not there exist any vacancies in previously authorized directorships at the time any such resolution is presented to the Board of Directors for adoption).

ARTICLE VII

The Board of Directors is expressly empowered to adopt, amend or repeal Bylaws of the Corporation. Any adoption, amendment or repeal of Bylaws of the Corporation
by the Board of Directors shall require the approval of a majority of the total number of authorized directors (whether or not there exist any vacancies in previously authorized directorships at the
time any resolution providing for adoption, amendment or repeal is presented to the Board).

The
stockholders shall also have power to adopt, amend or repeal the Bylaws of the Corporation.

ARTICLE VIII

Notwithstanding any other provisions of this Certificate of Incorporation or any provision of law which might otherwise permit a lesser vote or no vote, but in
addition to any affirmative vote of the holders of any particular class or series of the capital stock required by law or this Certificate of Incorporation, the affirmative vote of the holders of a
majority of the voting power of the then outstanding shares of capital stock of the Corporation, voting together as a single class, shall be

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required
to alter, amend or repeal any provision of Articles V, VI, or VII, this Article VIII or Article IX of this Certificate of Incorporation.

ARTICLE IX

To the fullest extent permitted by the Delaware General Corporation Law, as the same exists or may hereafter be amended, a director of the Corporation shall be
indemnified by the Corporation in accordance with the Bylaws and shall not be personally liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director,
except for liability (i) for any breach of the director's duty of loyalty to the Corporation or its stockholders, (ii) for any act or omission not in good fatih or which involve intentional misconduct
or a knowing violation of law, (iii) for any act related to the unlawful stock repurchase or payment of a dividend under Section 174 of the Delaware General Corporation Law, or (iv) for any
transaction from which the director derived an improper personal benefit.

If
the Delaware General Corporation Law is hereafter amended to authorize the further elimination or limitation of the liability of a director, then the liability of a director of the
Corporation shall be eliminated or limited to the fullest extent permitted by the Delaware General Corporation Law, as so amended.

Any
repeal or modification of the foregoing provisions of this Article 9 by the stockholders of the Corporation shall not adversely affect any right or protection of a director of the
Corporation existing at the time of such repeal or modification.

THIRD:
That the Board of Directors of the Corporation adopted resolutions approving and adopting the foregoing amendment and restatement by executing a unanimous written consent in lieu
of a meeting in accordance with Section 141(f) of the Delaware General Corporation Law.

FOURTH:
That the stockholders of the Corporation took action by executing a written consent in lieu of a meeting in accordance with the applicable provisions of Sections 228 and 242 of
the Delaware General Corporation Law in order to approve the foregoing amendment and restatement.

IN
WITNESS WHEREOF, the Corporation has caused this Restated Certificate of Incorporation to be signed by its duly authorized officer, this 13th day of September, 2001.

| |  | NETRATINGS, INC.
| |  | ----------------
| |  | By:             

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