From the I Love Using the Data Category dept.:
...the US Federal Government earlier today launched the new Data.Gov website. The primary goal of Data.Gov is to improve access to Federal data and expand creative use of those data beyond the walls of government by encouraging innovative ideas (e.g., web applications). Data.gov strives to make government more transparent and is committed to creating an unprecedented level of openness in Government.

slashdot.org

data.gov