1 billion hungry. 2010

  • Social media campaign to end world hunger.

Charity Note 2010

  • Crowdsourcing small donations

DARPA Network Challenge. 2009

  • Demonstrated the power of social media and social networks by mobilizing society to find 10 ...

AppZoo 2009

  • Social Intelligence for smartphone app discovery.

YouTube. 2008

  • Classifying collective human dynamics.