This really comes as no surprise. No matter how shady a website is, they will find users shady enough to advertise their scams, especially if the campaign protects them against the repercussions of thier actions. Some accounts are already too low in reputation to be accepted in most other campaigns, one which offers such high rates is a steal.

The review thread on the other hand has users honestly giving their own reviews, good or bad. No one would be red trusted for participating in that, except maybe 1xbit hires suck puppets to flood the thread and try to dry clean their image.