Well, damn it, now I'm curious. I'll ask: What was this (now decade old) plan?
I've worked on some adult stuff in the past. I have no issues with it but I won't be doing anything in it again. Mostly because it's such a relatively small and boring subset of the world.
I'll leave the story for pg to tell, should he ever opt to do so.
I will say that it involved clever abuse of search engines to generate traffic for obscure fetishes (all of them). It might not work today.
Then again, now that I think of it, see http://xkcd.com/305/ for a pretty good summary of half of pg's Plan for Pr0n (the other half shall be left as an exercise for the reader).
Trevor and Rtm and I noticed that there seemed to be fetishists for just about every fetish you could imagine, and many you'd never think of. We hypothesized that there was no possible fetish so odd that there wasn't at least one person out there who would be turned on by it. So we thought we'd randomly generate thousands of pages about different fetishes, and see how many hits they each got from search engines.
It wasn't a backup plan though, just an idea for a practical joke like Trevor's Information Supercollider.
I've worked on some adult stuff in the past. I have no issues with it but I won't be doing anything in it again. Mostly because it's such a relatively small and boring subset of the world.