Avoid grouping with this prick. According to his armory, he just transferred over from Alliance, and tonight I had the (dis)pleasure of grouping with him for H ToC. He claimed he was a DE, so we let him Greed for shards. We cleared H ToC then waited for him to DE everything for us...and he logged off. With our abyss crystals.
Now I know this is a bit of a stretch, but this leads me to believe he's basically just switched over to swindle as many Horde players as possible out of loot so he can shard it and make a hefty profit which he can then just transfer over to the Alliance side again.
Yah, I know, too much extrapolation, but it doesn't change the fact that he's an ass. I'd post this on the official forums but I think they have some sort of rule against "naming and shaming" there.
I PuG quite a bit, Ben, so I will keep an eye out for this turd. Thanks for the heads-up. ;)