Waaayyy back in the late 90s on yahoo chats there was a popular trend of taking your first name initial, your last name initial, and your state abbreviation to make your username. I ended up really liking mine, and I've stuck with it ever since.

I have two others I use, one was a nickname my uncle would call me, and the other was a funny phrase I uttered while puzzling with my mom that's become an injoke between us.