I use steam. I have many many games, I mostly play TF2, unreal 3, Eve online (bought first month on steam) and L4D. I also have warhammer DoW2, Saints Row 2, Boaderlands, garrys mod, Crysis warhead, and a few other single player games.
I also have Xbox live, mainly play gears2 and halo3
I also have PSN, mainly play GTA4 and COD4
My username is the same for everything: gobbybobby