What's the deal with your nickname? How did you get it? If your nickname is self-explanatory, then tell everyone when you first started using the internet, and what was the first thing that made you say "wow, this isn't just a place for freaks after all?" Was it a website? Was it an email from a long-lost friend? Go on, spill it.
I use my own name online - I stopped using a nickname about the time that BBS's started dying. Maybe it's crazy, but I see no need to separate my online persona from my in-person one.