The following documentation is about the Discuss This! module.
The concept of the Discuss This! module is simple:
Let users comment your pages but force them to do so in your Forum.
The module let you add a link at the bottom of your pages, by default called Discuss This!. When clicking that link, it creates a form where one can enter a comment. When that comment is saved, it generates a forum post with the comment attached. That post is then attached to the original page. A page with a post shows you a different link, Participate in this discussion, which let people know that comments have already been posted. It is also possible to display comments under the discussed node.
The following pages explain how one can setup Discuss This! to use all the available features.