internet asshole faces real world consequences

We all know that the faceless anonymity of the internet allows people to be total pricks with a feeling of impunity. So even though I disapprove of violence, I can't help but take pleasure when a
a griefer is hunted down and beaten up in real life. Griefers are people who just enjoy ruining games for other people, and this one was not only obnoxious but stupid enough to give away too much personal info.

Is it right to break someone's fingers for ruining a game for them? Did these people try going through regular channels and trying to get the griefer banned before they went after him? I don't really know. I can't say it's right, and the masters of Warcraft should probably ban the violent people for letting their argument spill out into the real world like that. But still, if this sends a message that it's not okay to be a bullying creton, even when you're online, then I can't object.