Google Knol is a feature from the search engine Google with the goal "to encourage people who know a particular subject to write an authoritative article about it."The Official Google Blog: Encouraging People to Contribute Knowledge (December 13, 2007) With Knol, Google is allowing users to write informational articles on all kinds of topics, from do-it-yoursef and how-to instructions to medical tips and information.
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"The key idea behind the knol project is to highlight authors. Books have authors' names right on the cover, news articles have bylines, scientific articles always have authors - but somehow the web evolved without a strong standard to keep authors names highlighted. We believe that knowing who wrote what will significantly help users make better use of web content."—Udi Manber, Google VP of EngineeringThe Official Google Blog: Encouraging People to Contribute Knowledge (December 13, 2007)