Another possible reason for the decline is that Facebook recently disabled a bunch of Facebook accounts associated with non-real-life names (e.g. accounts using

Another possible reason for the decline is that Facebook recently disabled a bunch of Facebook accounts associated with non-real-life names (e.g. accounts using Second Life account names). http://nwn.blogs.com/nwn/2011/05/facebook-deleting-second-life-avatar-profiles.html http://nwn.blogs.com/nwn/2011/05/facebook-deleting-second-li...