I walked away a little after BC expansion.
Between Warhammer and the upcoming L4D the last thing I want to do is grind out 10 more WoW levels.
I loved it while I played it, but some times you gotta move on. The joy of the PC gaming world is nothing really dominates it, so you don't really "miss out" on anything.
3rd Party Wall of Shame
http://www.nintendoworldreport.com/forums/index.php?topic=30478.msg581036#msg581036