Personally, I've never played TF2 either - I know it's free on Steam, but my computer isn't the best for gaming, and all the antivirus software that's running would probably slow it down somewhat......
Well... i used to play WoW but the game is dieing and i have lost all interest in the game in general (i don't even have it installed atm. cause i had to re-install Windows 7 ) so i'm planing on quitting after a long (and yet very enjoyable) 6 years (Naturally there are some other reasons behind me leaving the game, but cause i would not want to write a huge wall of text on poor *Soapie-Solar's pic i'll just leave it at this )
So to put it short... i'm not playing anything atm, I'm just surfing the endless waves of the internet and enjoying the ride that is the MLP community (and oh god it's fun )
Looking forward to Diablo III tho ... think that will be my next "big thing".