I had an existing Google account so that step was already taken care of. Creating the avatar was fun; it was kind of like creating a character of yourself for that game Guess Who? The talking part is a bit strange though...
I think using a blog would be a great way to get anonymous feedback/peer review during the writing process since much of it is set up like a word processor already. Maybe we could use it in science to post experiment procedures and students could post their hypothesis, observations, and conclusions to the related experiment. In math maybe we could address "reasonableness" for a certain problem's answer when doing problem solving; making students CONNECT with other people's thought process.