One of my favorite blogs is Space Prizes, THE definitive site for all things Space Prizes related. Of course the author covers the Space Elevator Games, but also the other NASA Centennial Challenges, X Prize Cup, The Heinlein Prize and on and on. He also has an exhaustive set of links on the blog’s sidebar.
If you’re interested in keeping current with any and all of the Space Prizes, this is the most complete blog I know of. Check it out…