To tell me how they will feel about the matter when the first girl player who unwittingly posts on the official forums, and winds up on the news as a rape victim. Or has her personal pictures gleaned off of her social networking sites that weren't completely locked down and secure thrown all over the internet. Or when a child is kidnapped because a pedobear (you know, one of those friends you have "in-game relationships" with as Blizzard calls it) gets him to tell them what state they live in and they track down his parents home based on his last name.
There are innumerable downsides to using your name publicly on a forum, and for everyone to say "then don't use it" as a logical argument against it blows my mind. People WILL use it, and it's irresponsible of Blizzard to give the impression that it's not only OK but a good thing to do so. It's one thing to offer something that you must opt-into, but to make this the standard and force us to avoid their services, and encouraging us to reveal more and more personal info to strangers over the internet is just flat our reckless. ESPECIALLY for a game that is marketed to children as well as adults.
So when the first news story hits, what will all of the dead-beat losers who have so little of a family or business life, to care about their image on the internet have to say?
edit** Also the response to this has been pretty much "I don't care" to "what the **** this is ridiculously wrong!"
Why are they doing this? As for cleaning up the forums of trolls, they are cleaning up the forums of everyone. The only people who will still use them are those who are the very bottom of the community. Those who have no need to worry about their image online. The type of people who have nothing going for them in life, will likely still troll on their real name anyway.