As has been said - don't promote what everyone else is, micro-niches where there's not loads of free content floating around convert better. Also, because it's a micro-niche and there's less options of paysites for surfers to join once they find a paysite they like they usually rebill for months.
Usually sponsors provide affiliates with the same fhgs and free content zips. Email, or even better phone them up, and ask for members area access so you can go in and grab your own content to use. When you use it on your sites surfers haven't already seen the pics/movies a thousand times before on other tgps/tubes/blogs.
Just because you're in the members area and can choose whatever content you want for your site doesn't mean you should give away the farm. Use
only softcore images/movies on your site. Repeat
only softcore! Why would surfers at your site pay to join a paysite if you just give them the hardcore right there?! Sure having hardcore on your site will get you more traffic but it won't convert for shit. Softcore converts, period.
It's your job to sell the site to the surfer, not the sponsors, so presell them, don't just send them to the tour and hope for the best.
It's pretty difficult to do with adult but
think and build objectively and you will get good conversions
EDIT : It's also quite common for people promoting adult to use the word 'free' to get and push a higher volume of traffic around.
Never use the word 'free' anywhere on any of your sites.
