For some reason I'm extremely hesitant to post things under my real name. I don't really care if people know my name on an individual basis (and it's not like I'm a high profile poster anyway), but I am squeamish about it generally, and feel too self-conscious to post anything if my name is associated directly with it. I've tried blogging under my real name and always went back and deleted everything, it caused me to…
For those cases, I consider how valuable what I have to say might be and, if it is truly worth it (not very often), I'll create a throw-away. Of course, it isn't going to stop anybody truly determined, but it makes it harder.