Al writes "Microsoft researchers have come up with a novel way to fine-tune the algorithms behind the company's new search engine, Bing: a game that harnesses human computing power to improve the results. Called Page Hunt, the game (which of course requires Silverlight to run) shows users a web page and asks them to figure out a search query that should produce the page within the first five results. The idea is to better understand user behavior and expectations and ultimately improve its search algorithms. Other human-computing projects have sought to digitize out-of-print text (reCAPTCHA) and image labeling (Google Image Labeler). Can Microsoft use a similar approach to gain the edge over its rival? Or does Google already have the edge with SearchWiki, which lets searchers re-rank its results?"