This is the only section in the Russian locale in which a stream of shit flows. Even in the politics section, the posts are more relevant and valuable than in the HYIPs section.
Let me guess; you tried reporting those posts in the past and reports were marked as bad, right? If Ann thread bumping spam is deleted I see no reason why this shouldn't be either, but this is just one of those things on bitcointalk that doesn't make much sense.
I think that problem here might be that even your own admin thinks that those are legit posts made by genuine users and not bots, even though its pretty obvious what's going on there.
You misunderstood, these users are not rewarded for their posts in this thread. They post reports about received remunerations in HYIP projects, in which they participate. Also rewards from Profit-Hunters BIZ project for participation in various quizzes, referral rewards and rewards received in various bounties. Thus, they confirm that these projects are not some kind of scams, but normally working projects where you can earn money.