Hemant Mehta is an American atheist activist, blogger, and author. He's known for selling his soul on eBay, eating babies, and not being an asshole to believers. His blog, Friendly Atheist, is currently hosted on Patheos. When he's not atheism-activising, he's a math teacher. If you are looking for a popular atheist YouTuber, his channel "The Atheist Voice" is a far better alternative to that other guy.
Mehta has written (and published) several books. He rose to fame after the events described in I Sold My Soul on eBay (2007, ISBN 978-1400073474). The Young Atheist's Survival Guide: Helping Secular Students Thrive (2012, ISBN 978-1939221070) is intended to help students cope with the social consequences of coming out as atheists and stand up to teachers and administrators trying to inject religion in public schools.
 The Friendly Atheist
- The Friendly Atheist in its current incarnation on Patheos.