Well, any information I put on this website is visible to anybody. I've used this screen name for a number of years in quite a few different places, including several thousand BBS posts. Also, when I eventually stop coming back to this website, which could be months or years from now, I doubt if I will remember to purge old information or change my Screen Name.
I value my privacy and right now, there is no easy way to attach my screen name to my personal information. I would prefer to keep it that way. The more privacy you have (or at least feel you have), the more open you can be about posting. Sure, a court order or an in-depth investigation could probably put together every possible peice of personal information on me, as well as a complete psych profile and who knows what else, but I don't expect that to happen any time soon. In the meantime, if some of my personal information is relevant to a discussion, I will probably disclose it. Otherwise, I feel no compulsion to fill out feel-good forms.
Changing the subject slightly, we could always follow the example of the DSLReports Stars Watercooler and have endless threads with topics like "What are you doing right now?" "Post screenshots of your desktop," "Whats your favourite thing to do on the weekend?" and "Describe your physical appearance." Frighteningly enough, most of those threads end up with hundreds of replies.
-Biscuits