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I always advocate publishing content (articles, blogs) on multiple web platforms, to really put it work as a marketing tool, so when I heard about Google Knol I was immediately interested. A 'Knol' is, according to Google, a unit of knowledge. Essentially Google Knol is a collection of articles, but the twist is that is that you can allow other users to edit your own 'Knols', either moderated or unmoderated.