I have 1 RealID friend from when I played WoW. Some kid named Charlie. RealID was new and he wanted me to add him as a friend. So we both enabled RealID and I have been annoyed ever since that some guy I barely know in WoW knows my full name. Luckily, he is a decent dude and we still talk when I decide to play WoW every 3-4 months or so. It's no wonder that no one uses RealID to me. Yeah there are some RL friends who may use it but other than that I prefer online anonymity over RealID.