It has to be a kind of an Affiliate Network.
1.)Where Facebook page owners will register themselves, generate a unique link to an article with their user code.
in the end, which will be used for tracking in the end, it will be better if you have the article link connected with [login to view URL] automatically so that counting is quick and better. There will be a fixed rate which will be paid to users according to a 1000 clicks they send, there must be a fake traffic (bot) detector which will prevent them from sending fake traffic. For more information about how the site has to be designed, you can create an account on MyLikes (Instant approval and free of cost, all websites mentioned above are free of cost).