Apparently, WoW has implemented displaying your IRL Name on all your forum posts. Furthermore, game mods allow anyone to see your IRL Name just by scrolling over your name in-game.

IRL Names

...in-game RealID has been implemented and the "friend of a friend" feature is not optional. This means if I friend you, anyone you "friend" with RealID will be able to see my real life name. There is no way to turn-off or disable "friend of friend".

friend of a friend??? OMFG!!! I can turn this off in Facebook - and I did. In EQ2, I told some friends my name, but that certainly doesn't mean I want all their friends to know it.

btw: my IRL Name is Eradani Berachah ... that's my story and I'm sticking to it.

Just FYI Star Craft II is like that also. I tried to remove my full name from the website and I can't even change it. So much for entering that honestly years ago.