Just been reading Matt Cutts on pay per post. He points out that this is definitely against the Google guidelines, but takes an interesting angle, kind of appealing to the humanity in people.
Pointing out a pay per post review of a cancer treatment site and asking how you’d feel if you or a family member were diagnosed with cancer and came across the misinformation in this pay-per-post. Scary stuff. I really hope Google has a slightly more reliable solution to this problem.





