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Randy Farmer goes over this concept in detail in Building Web Reputation Systems (http://shop.oreilly.com/product/9780596159801.do).

Google Tech Talk: http://www.youtube.com/watch?v=Yn7e0J9m6rE

See also: "YouTube: Five Stars Dominate Ratings" (http://youtube-global.blogspot.com/2009/09/five-stars-domina...)




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