Exactly, why would some one waste so much time posting negative comments about a stock they don't own or own very little of? They are either paid or have other mental problems. They feel important bashing the stock and get that secret payoff from engaging in negative emotional conflicts. The board is for like minded investors that want to see thier investment grow to be able to exchange views about the company.
Posts that are designed to depreciate the value of the stock should be deleted. Even though they probably have no impact on the stock they are not within the context of the group and are contrary to its purpose. Of course it is the moderators job to determine which are valid questions and which are not. The case history of the poster would come into play.
My posts are my opinion, make your own decisions. And remember, all fear is an illusion.