I saw that Rollin.io has a bounty sistem.
As for what I saw around managers aren't quite doing their jobs!

I mean just checking last posts on 50 users doesn't mean that he sees if the user is double posting a post from page 2 on page 9!

What I'm offering is a bad ass mother fucker service! All users involved in dig campaigns are knowing that spam is not tolerated and if I mark them as spam I will prove that their post is spam ! This being said the promoter is not forced to pay the user anymore with 5 BTC but instead he will pay me 75% of what the users should have received! It's a win-win-win situation! I win, promoter wins and forum wins!