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Discussions in Google Docs should speed up document collaboration...
Google has tweaked the collaboration tools in Google Docs to allow people working on documents to discuss changes and developments in a structured way.
Discussions for Google Docs allows users to talk about documents in a conversation stream that runs alongside the document, seen on the right-hand side of the image above. The stream is designed to be an improvement on the existing comments feature and offers additional tools to speed up the feedback cycle for collaborative documents.
Although not strictly related to the now-defunct Google Wave, Discussions for Google Docs features similar functionality.