Nattie – a long-time WOW player – lays out precisely and in depth why RealID is such a bad idea, especially for women and minorities.
In case you think Nattie’s fears are overblown, here’s where Ryan Erickson challenges people to find out more details about him with just his name, with fairly predictable results.
A blizzard employee, Bahiok, also posted his real name to the Blizzard forum to demonstrate it was harmless, and rapidly had his facebook account, his phone number, address and many other details revealed to the world in very short order. Those posts have now been deleted, and the facebook account deleted.

Bug Report: There’s no link here.
Tried clicking on the title?
Though I’ll add a link in the text too.
Clicking on the title returns me back to this page. Thanks for the body link; +5 Insightful
Title in single view as well as front page needs link. Will do.