Jason-
Pretty much what Cleo said. But I'd probably pay fifty dollars for it easily myself if I wasn't so lazy as to end up doing nothing with it and wasting the money.
It is somewhat catchy, probably porn isn't exactly the best utilization for it tho. Mainstream or "semi-mainstream". Lots of stuff you could do. Sell out sub-domains and put up basic templates with pictures (provided by users) and a custom message for customers on subdomains like Vickie.i-love-you.com for $20 a pop or whatever. Ok, that's a bit corny, but you get the point. Your imagination.
Good luck with it.