Photo credits

Tim Armstrong: Matthew Hurst; Marty Baron: Essdras M. Suarez/Boston Globe; John Battelle: James Duncan Davidson/O’Reilly Media; Tim Berners-Lee: Campus Party Brasil; Krishna Bharat: Miriam Olsson Jeffrey; Henry Blodget: Hubert Burda Media; David Bradley: Aspen Institute; Merrill Brown: J.D. Lasica; Steve Case: Case Foundation; Clay Christensen: Betsy Weber; Chris Cox: Jolie O’Dell; Gordon Crovitz: Rex Hammock; Nick Denton: Matt Haughey; Lewis DVorkin: Forbes; Roger Fidler: Missouri School of Journalism; Julius Genachowski: FCC; Richard Gingras: Gil Riego Jr.; Donald Graham: Esther Dyson; David Graves: LinkedIn; Arianna Huffington: Penn State; Walter Isaacson: J.D. Lasica; Jeff Jarvis: Re: Publica; Michael Kinsley: Aspen Institute; Larry Kramer: USA Today; Scott Kernit: Esther Dyson; Ted Leonsis: Jared Polin; Caroline Little: J.D. Lasica; Om Malik: Thomas Hawk; Betsy Morgan: Mahmood Al-Yousif; Mike Moritz: Sequoia Capital; Matt Mullenweg: Heisenberg Media; Rupert Murdoch: David Shankbone; Nick Negroponte: Jean-Baptiste LaBrune; Martin Nisenholtz: J.D. Lasica; Bob November: handout; Jonah Peretti: TechCrunch; Mike Perlis: Softbank Capital; Tom Rogers: Kempton; Eric Schmidt: Guillaume Paumier; Chris Schroeder: Christopher Michel; Doc Searls: Christopher Ducamp; Michael Sippey: Joi Ito; Chloe Sladden: About.me; Justin Smith: Rick Bloom/National Journal; Martin Sorrell: Sebastian Derungs; Alan Spoon: @newstuml; Andrew Sullivan: Chad Norman; Arthur Sulzberger: Hubert Burda Media; Dave Winer: Joi Ito; Scott Woelfel: Armchair Media;