On the 5th anniversary of Amazon’s Kindle, GeekSugar looked at the top 5 bestselling Kindle ebooks. Here they are (all fiction bestsellers in the real world as well): Fifty Shades of Grey The Hunger Games Catching Fire (The Hunger Games, Book 2) Mockingjay (The Hunger Games, Book 3) Fifty Shades Darker (Fifty Shades Trilogy, Book […]