Where Is Spam When You Want It?

Sean writes "In a complete twist to what everybody else is trying to do these days, I need to attract spam to an e-mail address for a research survey I am conducting. I have submitted a few articles to a handful of Usenet groups, and I have signed up to some general mailing lists but so far I have nothing to show for it. How come by personal account gets 100+ spam each day yet when I try to find it I get nothing? Where should I post my address so that it attracts spam?"