Microsoft adds another arrow in its search quiver, this time offering users cash back rewards for search. Of course, it's all product search, but if you find something you like, you'll get a discount between 2% - 11.5% off any price you find at any store listed in the results. Advertisers are only charged by purchase, not clicks.

You must sign up for the service and have a Microsoft Windows Live ID. Currently available only in the U.S.