I can't say it's surprising, but the sheer number of people who don't care about their full names (Let me guess..John Smith?)being REQUIRED to post on a forum for an Online Game is staggering.
Some food for thought:
-You apply for a job. Employer googles your name and sees your name on an MMO forum site. Good bye job. (I realize it's wrong of them to stereotype; but nothing's stopping them from doing so quietly).
-You're a female gamer with a female name in a sea of male forum-posters. You get singled out and harassed even moreso than you do for speaking in Ventrilo.
-You piss the right person off -just enough- to set them irrationally off over an Online Game; and get harassed or harmed because your Name was on Battle.net forums.
-You have a Unique; or Ethnic name, and because of that people switch gears instantaniously when they speak to you. It's not right, it's not ethical, but it happens. Some people speak to John Smith differently than they speak to Ali Marusivich.
-A minor whose parent isn't entirely in-tune with what their child is doing posts on Battle.net forums; their real name for all to see. They divulge some sort of hint off-handedly; like the mascot of their middle school's lacrosse team is a Pandabear. That child gets narrowed down and kidnapped.
Now, everybody who refuses to see the bad sides of this entire issue, answer these:
-Why do you need to have the real-life name of Twitzy the Female Gnome Warrior?
-What would be wrong with having a universal Battle.net Alias that could not be changed and would identify you across games to people you play with; with RealID as a thing on the side for those RL friends who want to see eachother's real names instead of Character names?
-Do you -really- think that Trolling on the Battle.net forums will go away with a change like this?
When those three questions can be rationally answered by an individual who isn't as careful with their name on the internet as they should be, the debate can continue.
Edit:
I realize some people's names are already out there; but why should there be another facet for those full names to be given out; especially over an ONLINE GAME - which have gone on for coming to two decades without requiring your full, real-life name to post on Forums or take part in in-game systems?