Fighting spam based on the content is a great idea. I don't think it's sufficient for the web. Specifically, email spam and spam on the web have different chara

Fighting spam based on the content is a great idea. I don't think it's sufficient for the web. Specifically, email spam and spam on the web have different characteristics: with email, you try to send more, so there's a tendency for keeping it short. On the web, you can go on; you want to skip spam filters, because more people can run across it, and you can get more google juice. You can pull in a big corpus of well-formed sentences, and randomly draw dozens from that. There may be specific topics that get more spam on Facebook, but I have no idea how much overlap there is with Facebook at large.