William Pomerantz posts on early challenges met by Peter Diamandis, Bob Richards, and Todd Hawley, as well as on taking notes or blogging or similar measures when involved with such challenges.
One of the things he mentions in the post is a requirement of all Google Lunar X PRIZE registrants to blog. Odyssey Moon, the first team to register, has already started, with 3 posts in the last couple weeks, pictures of the team rollout, and video coming soon. First, Loretta Whitesides kicks off the first of the New Years' posts. Then, Robert Richards gives an overview of the company. Finally, Chairman Ramin Khadem explains the business reasons why they're doing it. Here's part of the reason:
... we are not competing with Space Agencies. On the contrary, we see ourselves working with them and being responsive to their requests should they have small payloads they wish ejected onto the lunar surface. We also believe if you are clever, nimble, of the right size and right ambition you can do what major space agencies cannot achieve. This we believe constitutes the sweet spot of private enterprise.
Will also posts on the Google Lunar X PRIZE forum. Here's an interesting discussion that explains why the prize includes a requirement for a small payload and self-imaging.