There are bounties promising to pay after people invested on their ICO, copy and paste a white paper and change a few words, then post your announcement thread, if no body bought your scam, you could always advertise for free, post a bounty thread and promise to pay after people bought your shitcoin. that is not so hard to do, if you could sell your shitcoin to people, you'd pay with your shitcoin to shitposters, but if people didn't buy them, you could start working on your next shitcoin, post your threads and beggars would keep advertising for free until you get what you wanted.
All for free, no body cares if you are telling 20 shitposters to create 40K posts with hundreds of alt accounts.

But if shitposters would have to pay minimum $0.1 per post while wearing a signature, they would keep posting with no doubt, the only difference would be $4000 earned from them, people would also think twice before joining such campaigns.
Theymos could assign a mod to tag any bounty participants for payment, (the first attempt to post after wearing a signature should redirect you to a page asking for a minimum of $10 in Ð or Ł or Ξ or anything other than BTC to unlock 100 posts for you while wearing a signature).
Theymos is alone, doing everything by himself is difficult, if you are a coder and want something to be done about this problem, help him in coding.