in my old guild in cata, we had this nazely, whiny little douche, who thought he was better then anyone else in the guild, he never spoke to anyone outside of raiding, but in the raids, he was constantly nitpicking every tiny detail of peoples performance. In the end, everyone just refereed to him as 'the douche' behind his back, and we only kept him on because of his dps.
I honestly can't fathom being in a guild with a group of people you can't even try to make the effort of getting to know.