I have two forms on BugMuncher (http://bugmuncher.com http://bugmuncher.com), neither have captchas, and neither have ever received a single spam submission. O

I have two forms on BugMuncher (http://bugmuncher.com http://bugmuncher.com), neither have captchas, and neither have ever received a single spam submission. Other sites I run with much less traffic, and worse google rankings get a fair bit of spam. Anyone here got any ideas why this is? (not that I'm complaining)