read this post for adsense alternatives for adult websites http://www.seo-strategies.org/2009/02/adultsense-ads-for-adult-websites-blogs/
I'm sure etology doesn't allow adult adverts. AVNAds is owned by them. Neither does Adbrite, BlackLabelAds is owned by them. AVN and BlackLabelAds are the adult versions of Etology and Adbrite. I don't like the look of the blog, not too friendly. And Bitvitizer(sp?) is difficult to get into.
Adult sites benefit more from CPM networks, such as BlackLabelAds and AdultAdWorld. (Have yet to be paid by either) Got over $500 owed on each...