[rjd]

You are totally wrong about that, most of my musicians friends use there stage names, and recently I've been working in big media and all the journalists and writers use fake names as well. Quite common for high visibility people to do this.

Facebook seems total fine with it (or turns a blind eye) as long as its actually you (and not a troll account).

I used a nick name myself as I wanted to see if any spam started heading my way with that name. None so far, been using Facebook since it went public. Never a peep out of them.

[joe_the_user]

Up vote this point...

Facebook pretty much allows pseudonyms in practice whatever they say. If Google+ is actively stepping on the pseudonym accounts of people with well-known names, it's a problem - seriously.