Since I appear not to have posted here before--
Originally and elsewhere online I always used to use the screen name "Bal Ceber" which was an old, old joke I played at the expense of some ultra serious middle earth roleplayer kids. The name means nothing to anyone but me after all these years, but it's easy for me to remember and it's always available when I register. As opposed to Donovan, which is sometimes taken at busier boards.
Mostly, however, I stick with Donovan because I find myself terribly clever at times, and I like to take full credit for my best work. Total megalomania. Also, I find that talking to real people is much more satisfying than pretend duals, so I extend that courtesy to others. I'm me, and I stand behind my opinions for better or worse, and won't hide behind a fake name just to say some shit too stupid for me to own. That's just me...