POWER OF ATTORNEY

	KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned hereby
constitutes and appoints Ariel Amir as his true and lawful attorney-in-fact and agent, for
him and in his name, place and stead, in any and all capacities, with full power to act
alone, to (1) execute Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934, as amended, and the rules thereunder; and (2) do and perform all
necessary or desirable acts to complete and execute any of those Forms 3, 4 or 5 or any
amendments, and timely file those Forms with the Securities and Exchange Commission
and any stock exchange or similar authority, hereby granting unto said attorney-in-fact
and agent, full power and authority to do and perform any and all acts and things
requisite and necessary to be done in connection therewith, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent, may lawfully do or cause to be done by virtue hereof.


Date:  November 16, 2004

							/s/ Michael Schmidt
						Name:  Michael Schmidt