Mark Coatney

Position/Organization: Tumblr

Mark Coatney is the director/media evangelist for Tumblr; he Tumbls at Previously, he was an editor with primary responsibility for social media for Newsweek, where, in addition to conventional assigning/editing, he developed the Newsweek Tumblr, as well as its Twitter,Facebook and other audience engagement platforms. He began his career as one of the first writers for Time magazine's Website,, after receiving an MA in Political Science from the University of Kansas.