@shadowman said:
My guess is that the author knows all of this, but is hoping to sell his product to joe non-tech-guy schmoe with a small business website who doesn't know any better. Just your typical slimy snake-oil salesman. A better idea would be to send his customers a copy of all of their pictures to help show them how well this product really works.
I think there's a high probability of this. All the sites he lists as using his product are his own sites. Probably pulled all those testimonials out of his own arse.