The fervency of Robert Anton Wilson's fans reminds me of the old joke about the first album put out by the Velvet Underground rock band. Supposedly, it only sold a few hundred copies, but everyone who bought it went out and started their own band.
Wilson seems to have a similar effect upon people. People collect his books. They launch blogs devoted solely to his writings. And they create Web sites. I have a found quite a few places on the Internet devoted to Wilson.
A particularly good one is the Robert Anton Wilson Fans site, obviously a labor of love, that has a huge cache of interviews, letters that he wrote over the years, a bibliography, video and other goodies.
The official Robert Anton Wilson Web site is here.