I just read a great article on Boing Boing regarding 'Real Name' policies and how Google Plus and Facebook address them. Most interesting to me was the quoted post from friend and personal hero danah boyd.
Her position of how real names and psudonames are percieved by different socioeconomic groups is enlightneing. What she points our, and what I never considered, was that psudonyms were critical to certain socio economic groups as part of thier culture. What she did set forth is that the name choice is more of a personal reflection and in some cultures it is more 'right' to use your real name and in others it is more important to use a psudoname.
Real names are by no means universal on Facebook, but it’s the importance of real names is a myth that Facebook likes to shill out. And, for the most part, privileged white Americans use their real name on Facebook. So it “looks” right.