FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * BAIN CAPITAL INVESTORS LLC   2. Issuer Name and Ticker or Trading Symbol CMGI INC [CMGI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) __X__ Other (specify below) See Footnote (4) (Last) (First) (Middle) C/O BAIN CAPITAL, LLC, 111 HUNTINGTON AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 11/11/2004 (Street) BOSTON, MA 02199 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $0.01 par value 11/11/2004   S   515,077 D $ 1.66 19,655,415 I See footnotes (1) (2) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BAIN CAPITAL INVESTORS LLC C/O BAIN CAPITAL, LLC 111 HUNTINGTON AVENUE BOSTON, MA 02199		X		See Footnote (4)
Bain Capital Partners V, L.P. 111 HUNTINGTON AVENUE BOSTON, MA 02199		X
Information Partners 111 HUNTINGTON AVENUE BOSTON, MA 02199		X
BAIN CAPITAL FUND IV LP 111 HUNTINGTON AVENUE BOSTON, MA 02199		X
BCIP TRUST ASSOCIATES LP 111 HUNTINGTON AVENUE BOSTON, MA 02199		X
BCIP TRUST ASSOCIATES II 111 HUNTINGTON AVENUE BOSTON, MA 02199		X
BCIP TRUST ASSOCIATES II B 111 HUNTINGTON AVE BOSTON, MA 02199		X
BCIP ASSOCIATES 111 HUNTINGTON AVENUE BOSTON, MA 02199		X

Signatures

/s/ Bain Capital Investors, LLC		11/15/2004
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Bain Capital Investors, LLC ("BCI"), as the sole general partner of Bain Capital Partners IV, L.P. ("BCP IV"), and BCP IV, as the sole general partner of Bain Capital Fund IV, L.P. ("BCF") and the managing partner of Information Partners, may each be deemed to share voting and dispositive power with respect to the 10,776,811 shares held by BCF and the 379,389 shares held by Information Partners. BCI and BCP IV disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.
(2)	BCI, as the sole general partner of Bain Capital Partners V, L.P. ("BCP V") may be deemed to share voting and dispositive power with respect to the 7,498,439 shares held by BCP V. BCI disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
(3)	BCI is the sole member of the management committee of each of BCIP Associates ("BCIP") and BCIP Trust Associates, L.P. ("BCIPT"), and is the managing partner of BCIP Trust Associates II ("BCIPT II") and BCIP Trust Associates II-B ("BCIPT II-B") and thus may be deemed to share voting and dispositive power with respect to the 624,744 shares held by BCIP, the 370,979 shares held by BCIPT, the 3,841 shares held by BCIPT II, and the 1,212 shares held by BCIPT II-B. BCI disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
Remarks: (4)BCF, Information Partners, BCIP, BCIPT, BCPV, BCIPT II and BCIPT II-B are parties to a Stock Transfer Agreement, dated as of March 23, 2003 and a Stockholder Selling Agreement dated as of August 2, 2004 and consequently may be considered to acting as a group with the other persons and entities party thereto.  The Reporting Persons disclaim beneficial ownership of all such shares held by such parties and make this filing on behalf of themselves only.

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