Read an article in Time magazine on the plane back home about some kind of "Google" site for travel. You can't book there but they check out the prices and propose where you book best. Seems their income is (5%) from the link they propose and you book from. Looks interesting.
Cheap Flights, Airline Tickets, Cheap Airfare & Discount Travel Deals - Kayak.com
Does anybody knows it or used it?