Originally Posted by Drithius
Part of the shift in MMO's (and I use the multiplayer part of that loosely) is the increased instanced content. Say what you will about kill-stealing, trains, and other steretypical cliches of non-instanced content, it increased social gaming. People couldn't simply stick their heads in the sand and solo an instanced dungeon. If I wanted to play alone, I'd play an offline single player game.