Kind of OT, but I run a disposable email address service, and not too long ago, I decided to set up a facebook page for it - when I tried to put a link to the website in the description, it wouldn't let me - saying that the link had "been reported as abusive by facebook users" - highly unlikely, if you ask me - no more information provided, either. I was at first able to use an alternative - the .net instead of .com, and that worked. Later, I tried to update, and it wouldn't let me save - now saying the .net url was blocked for the same reason.
At about the same time, users of the disposable email address service reported difficulty signing up for facebook using a disposable address from the service - it supports a number of domain names, and the most obvious ones had been blocked for a while, but the list was being expanded. I'm sure the same thing was going with other disposable email services, but I haven't verified.
At about the same time, they announced a change to their privacy policy which involved them quietly supplying your email address to third party application providers when you use an application.
Coincidence? who cares... Anyway, don't know'em, don't vouch for'em.