The New York Times reports:

Chris Mohney, a senior vice president for content at BlackBook Media, will be the site’s editor in chief. Jessica Bennett, a senior writer and editor at Newsweek and The Daily Beast, will be the executive editor and, she said, a kind of Tumblr correspondent.

Their work — both documenting the Tumblr service and marketing it to users — will appear on the Web site’s staff blog and on a separate part of tumblr.com that has not been set up yet, a Tumblr spokeswoman said Wednesday.