djeps writes: The Red Balloon Challenge, sponsored by the Defense Advanced Research Projects Agency (DARPA) of the U.S. Department of Defense, laid out a simple objective: Use social media to identify the GPS coordinates for all 10 balloons, suspended at fixed locations across the country. The first team to do so would win $40,000. The challenge, commemorating the 40th anniversary of the Internet, highlighted social networking’s potential to solve widely distributed, time-sensitive problems.
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