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Page Hunt is a game developed by Bing for investigating human research behavior. It is a so-called "game with a purpose", as it pursues additional goals: not only to provide entertainment but also to harness human computation for some specific research task. The term "games with a purpose" was coined by Luis von Ahn, inventor of CAPTCHA, co-organizer of the reCAPTCHA project, and inventor of a famous ESP Game.〔L. von Ahn: “Games with a purpose”. Computer, vol. 29(6), pp. 92–94, 2006.〕 ==Game rules== Page Hunt is only accessible through Internet Explorer, and requires Silverlight (freely downloadable from the Page Hunt website). Unlike the games of Luis von Ahn, Page Hunt is a single-player game. It does not support user registration (and hence does not rank players). Shown a webpage, the player must find the best keyword or keywords which would bring this page to the list of top 5 search results by Bing. The higher the rank of the page within the first 5 results, the more points the player gets. Achieving this without frequent queries earns a bonus. The game lasts for 3 minutes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Page Hunt」の詳細全文を読む スポンサード リンク
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