Prize money’s not exactly huge.
And here’s the details on the space elevator challenge.
Well I doubt it but I hope my speculation on the Domain names
CentennialChallenges.org, .net, .us, .info, and .biz pan out. Someone got the .com before the thing was even publicy announced.
If I have time I would love to develope the sites and track the programs and compititions.
It may take some years but I think this program is a great thing. Nasa is on the right path.