If you haven't checked out Swivel yet, its a data geeks dream. Launched a few months ago, Swivel is a site full of all kinds of interesting data. Explore, compare, share and upload data. Search for data, have fun browsing through endless graphs, charts and data sets. If you upload data and make it available for public consumption, Swivel is free, if you upload data and want to keep it private there will be a small fee. This is obviously going to be a site that over time becomes more and more valuable as the volume of data increases - smart marketers will populate this site with data that they want to be made public. Check out this graph on Second Life usage stats that was posted today: