tinyE: Did you know battle.net charges you to change your name? :P No shit.
Pheace: Didn't even realize it was possible, just remember losing an account once because I wasn't able to provide ID that corresponded with the fake name I used to create it despite knowing exactly what the name was.
When I joined to play StarCraft 2 I screwed up my name. I went to change it and they had this notice: "You have one free name change remaining. After that, an additional charge will be applied."
They had evidently put that one freebie in just a week before I joined because of all the complaining.