You seems missing and don't know actually what's happening though it's forgiven that you're new here. So I guess you can't still see the worst spam thread whereas the spammers are flock and repeating what the others have said. And because they're spammers they tend to create garbage posts that in the first place didn't have any contribution in the forum. And as you go along here you'll realize some of the answers to your question is just right in front of you.

Once heard the word forum the first thing in our mind is there's an interaction between the members. They'll helping each other nor having different opinion that even they perceive differently yet they're creating a healthy relationship and conversation. So I think the mission now is to bring back the forum on how it really is.