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Exhibit 32.3

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        I, Thomas J. McInerney, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that, to my knowledge:

(1)

the Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2011 of IAC/InterActiveCorp (the "Report") which this statement accompanies fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

(2)

the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of IAC/InterActiveCorp.

Dated: May 6, 2011 /s/ THOMAS J. MCINERNEY
Thomas J. McInerney
Executive Vice President and
Chief Financial Officer

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Exhibit 32.3

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002