I used to really like the idea of having folks use their real names to foster accountability. That's why I've always used my real name. I think way too many people with fake user names come on board and throw [censored] on the wall just to see what sticks.
Brian's comment about people creating fake names is a valid one, unless they are actually instructors, in which case creating a fake name wouldn't make any sense if they were actually wanting to be seen within the martial arts online communities.
At this point however, I couldn't care less what people choose to do...forums are mostly GARBAGE! This one is no different! In a few cases, some people may actually benefit to some small degree through well-reasoned arguments. But I doubt this happens very much at all. For the most part, all you end up with is crap from kids, people who don't even train and have no intention to, and inexperienced martial artists who want to sound like experts. That's why I don't contribute as much as I used to. Its pointless. The real learning takes place on the dojo floor.
I don't care about who uses what name anymore. It doesn't make a difference to me. Let the lunatics run the asylum, at the end of the day, this place will be what it is; an internet forum for talking heads.