You could really make this work by making it multi-level in payment, in addition to payment for a troll job well done.
The MLM part would pay people for recruiting new trolls. New trolls would have to pay a fee to join. but they could get it back in the fees that new trolls in their "downlines" paid. Of course, the organization itself would have to take something like at least 10% just for running the show.
I would recommend a simple 5-level payment system, and, say, a tenth of a bitcoin as signup fee.

Interesting concept. For now its just gathering up the trolls , but I get what you are getting at . I'm not a programmer and have no idea how to create so a tier system but I LOVE IT! lol The way I have it set-up is a client X has something he needs trolls for pays with Credit Card ( enter any amount ) , or Bitcoins. All Trolls in GROUP A get alerted to go troll the clients assignment. ME for now ( lieutenant soon thereafter ) would then scan over the results for the particular trolls work and send off payment according to their quality of work. Good suggestion BADecker!