You may have heard of low-content books. They are books that you write very few words for. At first, that may seem strange, but every year, people buy hundreds of thousands of them. Examples include calendars, diaries, and journals. Other examples include coloring books and puzzle books. Considering how many kinds of low-content books there are and how they become woven into people’s lives, it’s no wonder that they are popular. Amazon.com is a platform where authors sell their low-content books, just as they do content-rich books. In particular, Kindle Direct Publishing (formerly known... [...]