I started writing this post on open data astronomy some time ago, and damn… I got scooped by Read/WriteWeb today with their article on Galaxy Zoo and other “distributed brain” projects. Galaxy Zoo, like Stardust@Home and Clickworkers, asks volunteers over the Web to label astronomy features (galaxies, moon craters, etc.) on images. These data help astronomers do better analysis. I actually had referenced Clickworkers for my PhD thesis under the Open Mind Initiative.
Also see my previous post on open data genetics.