This story is really only tangentially related to our game, but we'll mention it anyway: a London teacher has been accused of sending sexually-related text messages to a 14-year-old student that she contacted while they were playing World of Warcraft together. Apparently the woman met up with the student in Azeroth, and then was able to somehow get his phone number from him. Later, the boy's father discovered explicit text messages from her on his son's phone, and she now faces jailtime as a result.
Of course, this says nothing at all about World of Warcraft -- there are man, many ways of communication on the Internet, and the game happens to be just one of them (and shame on the Escapist for even suggesting this is an argument against games in education -- the fault here lies with the teacher, not the game). You should be cautious about who your children are corresponding with no matter where they are or what they're doing, and in fact, this boy's father was.