Wall Street Journal on human computation
Posted June 27, 2007 
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Comments(0) Computer Scientists Pull a Tom Sawyer To Finish Grunt Work
Prof. von Ahn agreed that the gaming approach works best for relatively simple tasks. Still, this notion of human computation is beginning to infiltrate other computer corners. Google is now hinting that in Web searches, for example, humans might have a role in refining search results, weeding out low-quality pages.
