Home of Rhett & Link fans - the Mythical Beasts!
Ahhhhhh... I hate contradicting people, but... erm, the $40, 000 was actually a 'cash' prize, and only some teams were planning to give it to charity. (ie: Nerdfighters, Groundspeak, the would-be Mythical Beast team, and maybe others...)
Here's a link to the winning MIT team's clever and effective, but rather, er, 'triangular' payout scheme.
I say, Kudos to those who earmarked it all for charity, and congrats to MIT. Just watch out for next time!