EXHIBIT 23.1


                       CONSENT OF INDEPENDENT ACCOUNTANTS

    We hereby consent to the incorporation by reference in the Registration
Statement on Form S-3 (No. 333-31826, No. 333-33568, No. 333-40680, No.
333-56490, and No. 333-78959) and Form S-8 (No. 333-30726, No. 333-40310, No.
333-55048, No. 333-55618, No. 333-48277, No. 333-90653, No. 333-91661, and No.
333-95105) of DoubleClick Inc. of our report dated January 11, 2001, except as
for Note 16 which is as of February 22, 2001, relating to the consolidated
financial statements and financial statement schedule, which appear in this Form
10-K.

                             /s/ PricewaterhouseCoopers LLP


PricewaterhouseCoopers LLP
New York, New York
March 9, 2001