This is super impressive actually. It seems US centric so I had never seen this work, but wow, there is a lot of stuff. Do you know if journos use this?
No, sorry, I do not know. It would be nice to have some kind of standard format for these kind of info so a visualization like yours could be applied easily to different databases. Maybe with some API-mangling (like yahoo pipes) it would be possible to consume several data sources and feed them into your js. Just an idea.