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Cash prize for wise crowd

SAN FRANCISCO: For most of us, social networking sites are just for fun - checking what our friends are doing, organising our weekends or playing games when the boss is not looking. But the stakes for users of sites like Facebook and Twitter are set to increase dramatically later on Sunday, as the U.S. government launches a competition that offers cunning Web users the chance to win thousands of dollars.

In a nine-day challenge run by Darpa, the U.S. Defence Advanced Research Projects Agency, members of the public are being offered a grand prize of $40,000 if they successfully use the Internet and social networks to track down a series of balloons hidden across America.

Under the rules of the competition, known as the Darpa Network Challenge, 10 large red balloons will be launched simultaneously at secret location across the United States. Players have until December 14 to find out where they were located, and the first person - or group of people - to track them all down will scoop the jackpot.

The rules are relatively loose: the balloons, which each measure eight feet in diameter, will be placed at fixed locations that are easily accessible and visible from nearby roads but will only be visible for one day. More than 300 teams have already signed up to take part and officials expect a number - from offering a reward online to sifting through various social networking sites to scan for sightings of the balloons.

``The most innovative ideas we probably haven't heard about yet, because there is an incentive to keep them secret,'' said Peter Lee, director of the agency's transformational convergence technology office.

On the surface, the premise seems a little wacky for a government agency that uses its annual budget of more than $3 billion to create technology for use by the U.S. military. After all, the organisation has helped fund technological breakthroughs such as the Internet and unmanned aerial vehicles in its different incarnations over the years.

But despite the whimsical nature of the task, Darpa officials say they are not running the challenge for fun.

According to the event's organisers, the challenge is an attempt to find out more about how large-scale problems can be solved by using the net and social networks to enhance ``timely communication, wide-area team building and urgent mobilisation''.

The idea is that through observing how the various groups attempting the task fare, the organisation will learn a significant amount about the way computer systems and popular websites can be used to harness collective intelligence.

``We are not interested in the balloons - we already know where those are,'' said the group's deputy director, Norman Whitaker. ``It's the techniques people use to solve the challenge we're focused on.''

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