Google Docs has always been an easy way to collaborate over a documents because many users can access the documents at the same time. But today, Google is stepping up the collaboration factor with more structured, threaded discussions. While previously users could add comments in Google Documents, today, Google is upgrading these comments to an actual discussions-like format within the document.
Comments are easier to see and visualize with timestamps and profile pictures from the Google account of the commenter. One of the more significant changes is that if comments are not integrated with your Gmail inbox. So when a document you’ve created is commented on, you’ll receive an email with the comment.