I've used all kinds of voice chats over the last 3 years.
Other games I've used it for:
Xbox Live
World of Weirdos (WOW)
Just general chat - All of which, alot of the people I used it with known my real name. (Because I prefer it that way) - I have no problem with people knowing my real name either, since it's normally just a select few friends.
Hosted my own Ventrillo server during my time playing WoW - Decided to take that down since I quit though.
So now, I just use skype, and teamspeak for my old friends.
04-Mar-2011 17:44:08