When you talk actual numbers it sounds pitiful in a way, but “AnteSpam”:http://antespam.com/ is growing consistently, if not super-fast. We’re up to 18 paying domains, and there are reportedly several “ready to land” any moment now.
If I ever felt for a moment that this wouldn’t sell because it didn’t provide value to the customers, I need only look at the stats to see that we’ve got domains that get three spam mails for every good mail. Amazing.