The Guardian's Activate Summit 2009 speakers

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Adam Afriyie

MP for Windsor since 2005 bio from Twitter

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Andy Baio

I make web stuff. @waxy, @xoxo, @upcomingorg, Belong.io, @playfic, @supercutorg, Kind of Bloop. Helped build @kickstarter. P.S. I love you. bio from Twitter

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Arianna Huffington

president and editor-in-chief of the huffington post media group. mother. sister. flat shoe advocate. sleep evangelist. bio from Twitter

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Bradley Horowitz

VP Product, Google+ bio from Twitter

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Charlie Leadbeater

Author We Think, co founder Participle, trustee Apps for Good, advisor Ministry of Stories, associate Demos, fellow Nesta, husband, father and Arsenal fan bio from Twitter

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Clare Lockhart
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Dr. R.K. Pachauri
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Ed Parsons

Google's Geospatial Technologist, a Mapping Geek and proud of it ! bio from Twitter

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Gerry Jackson
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John Van Oudenaren
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Jon Udell

http://jonudell.net/bio.html bio from Twitter

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Matt McAlister

CEO and Cofounder at Contributoria bio from LinkedIn

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Matt Webb

Co-founder at @bergcloud, cloud stuff for #IoT. We made @littleprinter. Rare blogging at @intrcnnctd. Mozhe shitou guo he. bio from Twitter

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Nick Bostrom
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Sugata Mitra

Why are we the way we are? bio from Twitter

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Thomas Gensemer
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Tom Steinberg

I'm the director of @mySociety. I care about usability, the social impact of the internet, and decent policy for a digital age bio from Twitter

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tom_watson

According to the Sun newspaper, Watson is a fundamentalist zealot who denounces any deviation from socialism. Also author of a book on corruption by NewsCorp. bio from Twitter

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Werner Vogels

CTO @ Amazon.com bio from Twitter

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Will Perrin

empowering communities through online action and hyperlocal web via talkaboutlocal. Also trustee of http://indigotrust.wordpress.com/ bio from Twitter