Who Owns Your Online Documents?
I thought this was a particularly good read. You're supposed to have read these terms already if you're using the services mentioned in the article, but I am confident that most people don't read and/or fully understand the terms they're agreeing to. My business partners and I use Google Docs to maintain a document repository for most of our ideas and project notes, so some of this was pretty eye-opening and thought provoking.
