EX-31.4

Exhibit 31.4

CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
(18 U.S.C. SECTION 1350)

I, Bruce Dalziel, certify that:

1. I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K of DoubleClick Inc.; and

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.


Dated: May 2, 2005	By:	/s/ BRUCE DALZIEL

		Bruce Dalziel Chief Financial Officer

	1.	I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K of DoubleClick Inc.; and

	2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.