Rebates sell cars and electronics, so why not web search? That must have been Microsoft’s thought process when they implemented Live Search Cashback back in 2008. Under the program, Microsoft paid rebates to shoppers who purchased goods after using their shopping and price comparison search engine. Essentially, Microsoft was trying to buy their way into the hearts of web users. But Bing Cashback will end on July 30, 2010. Will web surfers still consider Bing?