Dennis Crowley

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    Dennis Crowley (foursquare) on stage at the O'Reilly Where 2.0 Conference 2010 in San Jose, California.

    Photos by James Duncan Davidson. Editorial and blog use in articles about Where 2.0 Conference 2010, as well as personal and non-commercial use, is permitted with attribution alongside the image and a link back to this photo page where possible.

    Where 2.0 2010 is presented by O'Reilly Media. Produced by Good Company Communications.

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