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Sidewiki

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Sidewiki

http://www.google.com/sidewiki

One of the most recent Google experiments, Sidewiki aims to provide a forum for discussion about virtually every page on the Web. In the margin of any news article or site, Google Toolbar users can leave comments, links, or videos that other Toolbar users in turn can vote up or down. When it was announced, some bloggers welcomed the prospect of a universal commenting system while others pointed out that Sidewiki competes with publishers for reader comments and has great potential for spam. The project has no ads, but indirectly generates revenue by encouraging searches to be launched via the Google Toolbar.