Anyone heard of the DARPA balloon challenge? It was a challenge in celebration of the 40th anniversary of the internet. The point was to use social networking to find the balloons.
Pretty much you have 1 day to find 10 balloons placed ANYWEHRE within the U.S. You have to send in the exact coordinates of the balloon AND actually go up to the man/woman holding the balloon for some special message or whatever. And who else would win other than people at MIT. Winners won $40,000. They found all the balloons BUT lost some of the money along the way since they offered cash prizes to those who found the balloons.