The people behind this site are renowned to be hard core fraudsters. They fake testimonials. Here is one site they used to run:
http://netprofitstoday.com/blog/how-not-to-ask-an-affiliate-to-participate-in-your-program/
In all likelihood, the positives here were posted by them too, just like all the fake testimonials they use. One has to wonder why there is never any mention of a url to verify the claims (one poster claims he sells elsewhere, yeah right, where? Facebook? Share your facebook url so that we can all verify).
My advice is to stay far away from crooks like this, they have been spreading false information for years to fill their own pockets. They have 0 interest in other people, their priority is to pocket MONEY and they will go to any length to get it.