I seriously hate people who AFK in BGs. You might aswell just set up a bot, because a bot would, no joke, be more useful than you.
I do BGs to gear up and spread mayhem like most people, but seeing people AFK and run away from node fights frustrates me. Not talking about the node fights where our team is stomping the opponent, or where there are 5 enemies tearing 2-3 others apart, but I'm talking about equal fights where even 1 person can help.
Whats worse is when there's >ONE< enemy player being ganked by 4-5 others with more and more going in for the kill. I mean, seriously? The guy is going to die anyways...