Since I saw a few spammers on other blogs, I decided what the heck: Dave Mabus, if you're going to spam my blog, spam here. If, for example, you want to claim Randi owes you the million, try posting a copy of your application. If you want to thumb your nose at PZ and "the atheist movement," how about you stay and discuss the philosophy, rather than post links to a non-discussion area?
You should note that I've never deleted your spam, and only repeatedly invited you for discussion, which you've shied away from. It's far more amusing to laugh at desperation than it is to delete the annoyance. That's why an even formerly "banned" troll like WoMI still had lots and lots of comments after I "banned" him: When he wasn't flooding with copy-paste insults that made my browser worry he set up an infinite loop, he was just too hilarious to delete. Of course, if you actually have something cogent to say, you shouldn't care whether we laugh at you or not.