most people use the same name if it doesnt have references to the genre of game they prefer. if someones name is IPwnU(the most unoriginal FPS name i could come up with) then they most likely prefer FPS. but, me, and a lot of others,have a "neutral" name, if you will. Nedus, Organon1 and Kroenen do not have references to RPG stuff like princes and stuff like that, or violent stuff like killer, assassin, or anything like that. thats why some use the same name with all types of games.
look around the forums. you cant find one thread without someone with "Spartan", "Elite", or "Master Chief" in their name. you wont really find many RPG names around here, as this forum is based around a shooter.
[Edited on 1/6/2005 2:25:01 AM]