Google's 10 to the 100 contest

Has anybody else entered an idea in this yet? It’s a “contest” by Google called [URL=“http://www.project10tothe100.com/”]Project 10 to the 100 to find the best big “save-the-world” ideas. Google will choose the best one hundred ideas for people to vote on starting January 27th, and the top several ideas will split ten million of Google’s fortune to get off the ground. And yes, the money will go toward accomplishing the ideas, not the people who came up with them.

What’s your take: just a PR stunt or does Google actually care, and do you care enough to write up a submission?