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.
I hate to play the devil's advocate, but when you're in a third-world country or in need of cash, these kind of deals are hard to pass. You know after converting Bitcoin into fiat, that could almost match half of the average salaries there.
About the review thread, I wondered if anyone that gave a bad/ scathing review actually got paid for their honesty.