atmaspheric | endeavors

I am not sure how this technique works, but on a daily basis I get anywhere between 10-15 messages from the same better than Kazaa spammer but the messages come through as though they’ve already been read. It’s an interesting tactic since regardless of how many times I tell my spam filter they are bad, coming in as read seems to be beating the filter. Fortunately, Mail.app keeps them together and I can trash them en-masse without opening or confirming their receipt.

Anyone else get these? Any thoughts on tactics to block them?