EXHIBIT 23.5


            CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

We hereby consent to the incorporation by reference in this Registration
Statement of CMGI, Inc. on Form S-3, as well as any abbreviated
registration statement in connection with this Form S-3 filed pursuant to
Rule 462(b) under the Securities Act, of our report, dated June 17, 1997,
except for Note 6, for which the date is June 9, 1999, relating to the
financial statements of Shopping.com which appears in Form 8-K of CMGI,
Inc. dated August 12, 1999. We also consent to the reference to our Firm
under the caption "Experts" in the prospectus, which is part of this
Registration Statement.


/s/  SINGER LEWAK GREENBAUM & GOLDSTEIN LLP

SINGER LEWAK GREENBAUM & GOLDSTEIN LLP

Los Angeles, California
August 18, 2000