Dennis Crowley on Foursquare and Location Based Services(techcocktail.com)
techcocktail.com
Dennis Crowley on Foursquare and Location Based Services
http://techcocktail.com/dennis-crowley-foursquare-sxsw-2011-03
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http://techcocktail.com/dennis-crowley-foursquare-sxsw-2011-03
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