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SXSW 2010 Interviews | Tristan Walker, foursquare | PBS

Duration: 02:38

Is 'Foursquare' the next big thing in social networking? The mobile social application is among several that got a lot of buzz at the SXSW 2010 Interactive Festival. Foursquare's Tristan Walker explains.



Post Date: March 17, 2010