I see ads like "Be a police officer" or "Play some 1990s video game" or "Have sex with your sister" I have access to pretty much any affiliate program. Thanks!
The good thing with FB ads is that you can target a very very specific audience. Just think what kind of people your audience are, the common ground they have with each other and try to spark interest. Keep it informal. Most people today can auto block out ads - they have even built up resiliance to the flashing ones.. but if you write something interesting/funny you will get a lead.
From what I've tested mostly Email/Zip CPA submits to access movies or downloads. Anything video or download related converts well for USA (mostly College/teenagers). That's all I've tested, I'd like to know what works for others!