(Note that this meeting is being held on the SECOND THURSDAY of the month.) Spammers are working hard to get past filters, but so far the filters are winning. Is this because Bayesian filters are unbeatable, or because not all users have them yet? As good filters become more widespread, how will spam evolve, and what will filters have to do to keep up? In addition to GBC/ACM, this meeting is co-sponsored by the IEEE Communications Society, the IEEE Computer Society, and the IEEE Social Implications of Technology (SIT) Society. The talk is open to the public. After the meeting there will be an own-pay dinner, possibly with the speaker, at a nearby restaurant. Directions to the restaurant will be given at the meeting.