There are numerous fake accounts which are created on Facebook everyday and no one was like "Hey, let's add this fee system". If you violate the rules, you will be punished, as simple as that. Many people will lose interest if the fee system is implemented, not only shitposters, but also others. This forum was made to talk about bitcoin. Moreover, if the admin notices a problem within this forum, he definitely will take an action.
The words I highlighted above is not sure will eliminate account farmers or spammers, I don't know if they lose interest after they pay and after a month they got a profit on a signature campaign. If ever that implement how about our Moderators they did not have a work here on the forum.
We are all both here hoping that we have to earn money, joining signatures campaign and social media campaign are the best way and easy to earn money. The point here is, do not abuse the forum that's why we have now a new rule merit system rule implemented that bring us a courage to post a quality post, our motivation is merit system, good poster and shares our thought in the forum.