Google on Wednesday launched Sidewiki, a Web annotation tool that serves as a comment forum for Web pages. Sidewiki ranks entries according to their relevance, as determined by Google’s own algorithm. It will also place those comments on Web pages that carry the information which sparked the comments. Google Sidewiki appears as a browser sidebar. It is being released as a feature of the Google Toolbar for Firefox and Internet Explorer, and it will also be available in Chrome and other browsers.
