If low quality content is overflowing?

[brian]

This problem will need consistent moderation of the authority within the forum site for them to filter the post or content in every thread.

Yeah its a good way to put an end to low quality posts.

You need to hire moderators who are willing to do that for you because its a heck of a lot job to do by one person. Hire Moderators those who are not only willing to filter your posts but also willing to contribute to your community.