Aren blacklists prone to abuse?
Yes. To be honest, this is the weak link in this plan. A widely used FFB blacklist run by nuts like MAPS could do a lot of damage. And all blacklists seem to become corrupt eventually. FFB blacklists are less dangerous than mail server blacklists, because being on the blacklist alone is not enough to cause a site trouble. You only get crawled when you’re already on the blacklist, and a new spam arrives with your url in it. On the other hand, FFBs are going to be run by individual users, who will not be as discerning about the blacklists they subscribe to as ISPs are.
