I am pretty sure there's a better reason it got banned. Facebook does not allow storing user's data externally. You can cache them but they must be up to date:

I am pretty sure there's a better reason it got banned. Facebook does not allow storing user's data externally. You can cache them but they must be up to date: -- http://developers.facebook.com/policy/ http://developers.facebook.com/policy/ -- You may cache data you receive through use of the Facebook API in order to improve your application’s user experience, but you should try to keep the data up to date. -- Plus, applications that rise to millions within days usually employ spam tactics. I 'm curious what's the motivation behind all this blog attention, though