An anonymous reader writes "Internet users have sadly grown used to having their every click and scroll measured by advertisers and content providers seeking to squeeze every last ounce of attention out of them. Now, it seems such data gathering is spreading into your favorite novels as well. The NY Times profiles several companies trying to collect data on how people read ebooks. Quoting: 'Scribd is just beginning to analyze the data from its subscribers. Some general insights: The longer a mystery novel is, the more likely readers are to jump to the end to see who done it. People are more likely to finish biographies than business titles, but a chapter of a yoga book is all they need. They speed through romances faster than religious titles, and erotica fastest of all. At Oyster, a top book is What Women Want, promoted as a work that "brings you inside a woman's head so you can learn how to blow her mind." Everyone who starts it finishes it. On the other hand, Arthur M. Schlesinger Jr.'s The Cycles of American History blows no minds: fewer than 1 percent of the readers who start it get to the end. Oyster data shows that readers are 25 percent more likely to finish books that are broken up into shorter chapters. That is an inevitable consequence of people reading in short sessions during the day on an iPhone.'"