Of the nonfiction authors - two women and three men - only one has appeared on the best books list before.

James Gleick, an American nonfiction author of several award-winning books.

Chris Guillebeau is an American entrepreneur, nonfiction author, blogger and speaker.

A nonfiction author has to bring a platform with him - radio, a TV show or some kind of recognizable vehicle to help launch them.

Returning to Chicago, he worked for a little over a decade as an editor, nonfiction author, playwright, theater director, and film producer.

As a nonfiction author, he is known for his meticulous research and accuracy, delivered in novel-like, page-turner style.

Richard Louv (born 1949) is an American nonfiction author and journalist.

(This reporter is a nonfiction author and a user of the site.)

Robert A. Burton is an American physician, novelist, nonfiction author and columnist.

Each year features best-selling fiction and nonfiction authors who write about a variety of issues and topics.