The Mystery of a Mystery Message on Amazon's Bestseller Charts

Author Ha Founya has published 35 titles since mid-April. None of them have any reviews, and their covers just seem to be stock photos. They looked like a book, they had the structure of a novel, but the stories as they went along didn't really make sense. How does such lackluster pros climb to the top of the list? Well, you see, Amazon has a service called Amazon Kindle Unlimited.