"There are thousands of authors on Twitter across numerous genres. In a recent post we featured 100, focusing for the most part on fiction. From writers focused on business to those devoted to history, hobbies, and more, here are over 70 great nonfiction authors to follow on Twitter.
The authors featured here use Twitter (Twitter reviews) actively, updating regularly, engaging with their followers, and providing content that is useful and interesting. It’s important to note that this list is not based on the authors’ written work or literary achievements. Additionally, we recognize that this list represents just a fraction of talented authors who tweet and welcome you to add to it by sharing your own favorite nonfiction authors on Twitter in the comments."