I think so. It wasn't intentional originally - I joined RPG, would leave for a while, would forget my username/email combo, and would just recreate a username. Repeat. After I made this username, I started hunting for my old ones and eventually found them. Now it's nice because if I RP in one thread with a person, their opinions don't weigh in if we join a second RP together... or whatever. I think the usual concern is someone being psychotic or abusive. When I post in the introduction sections, I usually admit to having been on before under a forgotten username, and nobody minds as far as I'm aware.