Not that much. (Score 1)

I still played WoW a little bit while back, and during the patch i'd usually be at school, so it wasnt a big deal for me. If i was at home i'd just play Guild Wars haha. I actually heard that the Guild Wars population would rise by like 25% when WoW was down, mainly because WoW players were just bored and needed some more MMORPG action.