theodp writes "Amazon CEO Jeff Bezos was handed a patent Tuesday for Information exchange between users of different web pages. Tough to tell what exactly it might cover ('various modifications may be made without deviating from the spirit and scope of the invention'), although RSS Newsreaders, TrackBacks, and Google News come to mind. Elements of Bezos' invention may evoke a sense of deja vu in those who used Third Voice or the Annotation Engine."
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