Knol is Google’s ‘unit of knowledge’. It is the new tool introduced by Google to let users to write articles on subjects they are authoritative in. In other words, it is a Wikipedia that will have one particular author for every content page. Unofficially, Knol is also called the Googlepedia It is expected to provide stiff competition to a few of the existing websites offering similar services, like

Wikipedia
About.com
Squidoo.com
Mahalo.com

NOTE: KNOL is also the Stock quote symbol for Knology Inc.

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