On most email lists and Web sites I simply use my real name, which was the rule in several of the places where I first participated in online discussion in the early 1990s.
I mentioned in a similar thread earlier this week that I don't feel that my handle has any ties to my identity - it's just the barrier to entry for posting here. I wouldn't mind one bit if PG decided not to display usernames with posts, and I think it might be an interesting experiment because it would completely eliminate the perceived problem of long-standing users getting celebrity votes and drowning out other, equally valid points of view.
This is the reasoning behind my nickname I have on my site, but it actually runs a bit deeper than that. I also keep some of the mannerisms of the lead characters in ESWAT and the organization’s methods in the back of my mind, whether they work in the real world or something I should scrutinize: Deunan’s knowledge and curiosity of multiple languages, ESWAT’s belief that specialization breeds weakness, the protagonists’ realizing they’ve become trapped in their current occupation because that’s what they are best at, etc. It made perfect sense to me to name my online-self after something from the series.
As you have probably gathered, Queensrÿche are one of my favorite bands, and O:M is one of my all-time favorite albums.
-similar to my real name
-available on as much websites as possible (signing up early for a service and getting your first name as a handle is nice, but it's unlikely you get it everywhere)
-Easy to have a similar one in case it's unavailable
-short