Another reason to praise Mozilla: Mox hackers have added a Bayesian spam-filter to the Mozilla mailer. A Bayesian filter learns from its user — you give it some examples of messages that are and aren't spam, and it will use statistical analysis to guess whether new mail is more like spam or more like not-spam. When it guesses wrong, you give it a gentle corrective feedback and it learns, getting better all the time.
(via /.)