I think it would be a better idea if we just started using Bayesian Filtering though. Of course the filters would have to be trained for a bit, work on individual sentences, and be fast. But it does wonders for my e-mail. I almost never get false positives or negatives, and I can get from 100 to about 336 spam every day. If you're on a net with a lot of spam, I guess a filtering system based on that could really help you.
