MIT has organized a team that pays the first finders and their teammates (in old school internet scam pyramid fashion!), and IMO has the best shot of winning. Join the team, recruit your friends, and look for the balloons tomorrow!
(And yes, that *is* a referral style link!)
For those not in the know, DARPA is the Defense Advanced Research Projects Agency, a devision of the United States military and Department of Defense. You can read more about the challenge here: http://networkchallenge.darpa.mil/
The balloons look like this:
