I've wondered what impact Zynga has on artificially boosting Facebook's active user count. Zynga's games provide an incentive to operate multiple accounts, and

I've wondered what impact Zynga has on artificially boosting Facebook's active user count. Zynga's games provide an incentive to operate multiple accounts, and counts about 200m active users, so if only 5% of those users were each running multiple accounts (say 5 extra), that's around 50m dupe accounts. (I figure thats an over-estimation though) Not to mention the other reasons people create dupe Facebook accounts