There's already a discussion going on about it on the forums
http://www.buddyforum.de/showthread.php?6999-Interesting-News-from-Blizzard&p=84243#post84243
And just a comment...all the information that he posted on the Blizzard person is all public. All that information is available on most people to anyone who wants to look you up. So the question is why are people so afraid of other WoW players? Like I said in my other post you give out all this information to people in stores and restaurants all the time. I can't count the number of times I've looked up people on Facebook, Linkedin, MySpace, ect...just because I was curious to see a glimpse of their personal life. I can only see what they present to the world, some people have more than others. Regardless this had nothing to do with WoW, RealID, or anything other than they introduced themselves.
People with a tiny bit of knowledge of the internet are trying to scare people under rocks because the "internet is a bad place filled with bad people", its not. Its filled with lots and lots of normal people doing normal things. Just like in the real world there are criminals who take advantage of some people. That doesn't mean that you shouldn't leave your house or you need to wear a disguise every time you leave your house. No you make good decisions and decide what level of exposure you want to have. As with this change you have to make the same choice, the difference is Blizzard is telling you up front that level of exposure for posting on the forums. Its still up to you on whether you are going to post or not.