[jobu]

Be careful that you're not banning legitimate apps because a few users really hated them and went out of their way to get them taken down. I remember this being an issue recently with DMCA takedowns of innocent FB users.

EDIT: Here's a link to the ars technica DMCA article: http://arstechnica.com/tech-policy/news/2011/04/facebook-tak... Maybe I'm too cynical, but I could easily see some unscrupulous developer figuring out how to spam negative feedback against their competition on FaceBook to get them auto-banned.