UPDATE: Jay Rosen explains this far better than I can: The Era of Networked Journalism Begins
Today, they announce a project where bloggers and good governemnt types can work together to expose corruption in the earmarks process. They providing a means where you can help figure out suspicious spending… and then confront politicians regarding that spending.
They're also doing so using a great mashup of Google maps with a database of spending.
This has significance beyond exposing a little corruption, it's a next step in a process where professional and citizen journalists work together to expose bad guys.
Please check it out here