Week 11 Google Docs

Hello to any one out there still blogging, I am just trying to finish this Web 2.0 course. I found the Google Docs feature relatively easy to use compared with some of the social networking tools we have looked at. There would be a use for it with libraries that have multiple branches, and I guess even the same doc within one library if it needed input from several people. I do wonder though if there is an automatic way of differentiating between the alterations that people are making so that the main author knows who has added what to the doc. It would be good if each email addressee that was invited to share actually appeared in a different colour/type of font.