Changing Media Summit 2009 speakers

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CEO Johnston Press plc. Previously, MD Microsoft UK Consumer & Online, before that board director BBC for 8 years, New Media & Technology bio from Twitter

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Director of Tow Centre for Digital Journalism at Columbia J School. Former guardian news & media director of digital content. Contact ebell@columbia.edu bio from Twitter

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Co-Executive editor, AllThingsD bio from Twitter

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GM, New Digital Businesses at Guardian News & Media bio from LinkedIn

• The Open Strategy, Tue 24th March 2:00am to 3:00am

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The BBC's technology correspondent. This is my personal profile - if you don't like the dog etc go to @BBCRoryCJ bio from Twitter