Erick Schonfeld submits: When it comes to search, Microsoft (MSFT) is trying everything it can to become a serious player. It tried to acquire Yahoo (YHOO), its latest version of Internet Explorer attempts to steer Web surfers away from Google (GOOG), and then there is straight-out payola to search advertisers. I am talking, of course, of Microsoft’s Live Search Cashback promotion , which lets advertisers offer rebates to consumers who make a purchase after doing a Microsoft search. Complete Story » ...