What downloader site to allow for surfers forum?
 

I have surfer forum about sex and there are some pics and videos subforums also. I found out that main part of content is placed on pay per download sites, so in fact most people posts only because of possibility to earn some money and therefore they are polluting forum mainly with shitty content.
Does exist some downloader sites with which can webmasters make deals?
eg. i will refer them that is only available site to put content on and make some money that way, as i am lazy to make my own downloader site (eg. pichunter forum has it)

and i guess that good solution is to ban all these pay per download sites, but what other good downloader sites are left then?