I'm more open than I would like to be online, but I don't know how to contain it since much of the content is outside of my control. That being said, on public forums, I never share more than fairly common characteristics (college student at liberal arts college, etc) that can be attributed to many, and I never use my real name (except on AGA). I think it's something we definitely have to be aware of though, and I hope that more people will chime in with their thoughts on this issue.