Since we are on the subject of e-books, here is an interesting article: As New Services Track Habits, the E-Books Are Reading You http://www.nytimes.com/2013/12/25/technology/as-new-services-track-habits-the-e-books-are-reading-you.html?pagewanted=all&_r=2&
For me, writing has always been a form of self-expression. I have not been too focused on what people want, react to or respond to. I am not sure if Big Data and Analytics will lead to better writing. Thoughts? Venky