Some recent disappearances;
http://glb.warriorgeneral.com/game/home/143765 (Very recent but such a classy guy whose departure was a bit abrupt. Sure hope he comes back.)
http://glb.warriorgeneral.com/game/home/29721 (Another friend but I'm not sure if he's gone for good or just an occasional drop-in guy anymore.)
http://glb.warriorgeneral.com/game/home/17378 (Friend who's been gone for half a year now.)
http://glb.warriorgeneral.com/game/home/219897 (Gone for over a year now).