It seems that the affiliate ad model for "dating" sites pays well: http://money.cnn.com/magazines/business2/business2_archive/2... (note the paragraph which starts "To expand without investment capital...").

It's also interesting to see that when AdBrite loses an adult advertising partnership, it's an important loss for them: http://valleywag.com/tech/online-advertising/philip-kaplans-...

AdBrite is private, though, so we don't know what percentage of adult ads account for revenues, but they do have an entire other site -- BlackLabelAds.com - dedicated to adult ads.

Anyway, it was just an obvious suggestion, given the 3boobs site you'd already created.

Best of luck to you, whatever you do.