Not that there's anything wrong with that. Seriously, why is it so problematic if people use names they chose for themselves? There are even countries where it's a very bad idea to go online with your real name for fear of government persecution or other repercussions. Is Facebook going to enforce ID papers on, say, Egyptian dissidents as well? Sure they like to link all accounts with physical persons as intimately as possible, but it's not exactly in the best interest of their users.