I guess Bayes refers to running a Bayes-based classifier[1] on a certain site in order to infer the probability that it is a "bad"/spam one. On the other hand,

I guess Bayes refers to running a Bayes-based classifier[1] on a certain site in order to infer the probability that it is a "bad"/spam one. On the other hand, I have no idea what mfa means. [1]http://en.wikipedia.org/wiki/Bayesian_spam_filtering http://en.wikipedia.org/wiki/Bayesian_spam_filtering