Hey,
Concerning non-adult files, I find it amazing some people waste their time with these new sites, only to end up coming back to SC. I know for a fact you'll earn less at these sites because they can't even attain the deals and agreements with advertisers we have. And for the sites making users pay for every download, you really don't need much thought to know they're not going to work as well as something that's free and still pays high - but the stats show it too. Most of these sites even ripped the SC template, lol.
Anyway, concerning adult files: no, we do not support it, and I know if you ask the Adscend team now if it's allowed it's going to be a firm no, so don't try it with them or they're going to end up banning you too. Right now, the only adult incentive offers come from Adult-Access-Now, and they perform VERY poorly. Advertisers don't want their brands to be associated with pornography, so this rule goes down the line of middlemen right to the surveys and networks themselves, which means that most, if not all, well performing surveys and mobile offers do not and will not allow adult content. As for Dengee, all they do is straight broker the ads from Adult-Access-Now, so it's pretty pointless to use that. And again, the ads themselves hardly work.
All in all, adult and incentive CPA is NOT a lucrative combination, at all. You're better off trying something non-adult or not using incentive CPA.
Good luck!