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'm J. D. Harper, although only people on the internet call me that. I would prefer it if people in real life called me J. D. too, but entrenched patterns are difficult to change.
When I move to a new town, then I will call myself J. D., and so will everyone else, right?