Most Widely Read Ebook in the World

What is the most widely read ebook in the world? Interestingly, no one knows the answer to that question. You can find best seller lists for ebooks, which are generally limited to one distributor's numbers for a limited time window. The best seller lists ignore all of the illegal ebook downloads, the free ebooks, the books from the past, and the books from distributors that don't report their numbers. In other words, no one has any way to determine which ebook has been the most widely read in...