On the other side, consider this. People will say things on an ANONYMOUS forum that they would never DARE say to someone's face. With real names being used, I wonder if this could curtail this and create a bit more civility.
Perhaps it will bring a bit more civility to the forums. However the negatives are likely far greater. Its not uncommon for perspective employers to google names. With the common misconceptions many have in regards to video games, and fantasy games specifically, having your name linked to a bunch of posts on a fantasy MMO board is probably already a mark against you. Doubly so if you're participating in one of the roleplaying boards, which would look insane to someone not understanding what it is.
What about the natural tendancy for WOW and other games like it to attract some individuals who are a bit more socially ackward or disconnected. Do you think its worth some civility for every female gamer to have their names readily available for whatever akward guy wants to use it to their advantage. Female gamers already suffer from harassment and abuse often in games with lurid suggestions and propositions for cyberlovin. Why assume that once its easy enough, using the name, to find their phone number or facebook or email or AIM name that they're not going to have that same kind of thing translating out of game?
You have instances elsewhere in other games where individuals find out the name of someone that wronged them and tracked them down. There's a story from a Counter-Strike person in recent years who was killed repeatedly in knife fights and, having found out the real name of the player, found out he lived in a nearby town and found him and stabbed him nearly killing the person. Is such extreme actions common? Absolutely not. However, in the above case there was some work to be done to get the users real name to allow for the situation to happen. Why give people access to this important information freely and simply allowing the likelihood of such an event happening to increase. Is any real increase of something like, even if its a small one, worth adding some "civility" that could be achieved nearly as well doing a different and less privacy infringing method?
IMO this has little to do with curbing trolls through names and everything to do with using more direct control over your access.
I'm positive there are other marketing forces at play, but there's my opinion on how trolls enter into the picture.
The suspision is three fold in regards to the REAL reasons behind this:
1. Their recent agreement with facebook allows for a great deal of information sharing with regards to RealID, with the thought being that through RealID plus facebook a profile on you in regards to what kind of advertisers would be best for you and then sell targeted ad space
2. The popularity of Starcraft in Korea and the new laws there requiring full names to be displayed in web communities of over 100,000.
3. The size of the Chinese population with the Chinese planning on implimenting a similar law.
Essentially it appears in all honesty that the American and European players safety and privacy is being put on the line to increase their asian reach.
In part, I can't fault them for making a business decision. On the other hand, this is far and away from the Blizzard that gamers have known for almost 2 decades now.
So you have to post your name, what's to prevent you from posting under a phony name when you register? I do that all the time when I get on sites that just have to have my name.
I imagine with regards to WOW having account information that is wholey different than your CC information could be problematic. I'm unsure however.