Anyone who still doubts that mainstream media are no longer the gatekeepers of mass communication and knowledge dissemination would do well to talk to Hosni Mubarak . Or to ‘ CTB ’. With over five billion mobile phones in use, over 100 million smart phones sold per quarter (Q4 2010), 175 million Twitter accounts*, 600 million Facebook users (Jan 2011), one billion Google search queries per day (Mar 2011), news publishers (and others) are grappling with how they best to link and to leverage the power of social media. That challenge is under the spotlight at the spring meeting of the Digital Editors Network at the University of Central Lancashire in Preston in Tuesday, 24th May 2011. Those leading the discussion on "Social Media & Publishers: mobilizing, managing, measuring and monetizing the engagement," will include executives from Facebook , The Independent and the Centre for Analytic Journalism . The program, outlined below, will be Webcast here and also blogged liv...