I have had the same thing. I also use a unique address and also received a message from the same address edam listed. A message with a passionate plea about how there should be more guns in the US (oh, yes, please do, and just kill the other gunslingers, but keep it out of my frigging country). Not only do I disagree with that nutcase, but the fact that he is spamming it to e-mail addresses from members here is rather worrying.

Update 2012-12-27: Another one, from the same sender.