This visualization was made at the Youth And Corruption Hackaton (and slightly after) Organized by Transparency International and Kitchen Budapest, within the Random Hacks of Kindness.
You can find out more at http://dib.kibu.hu All code is open source (and ugly :), Fork and have fun!
If you don't know where to start I would suggest you, watching some videos at http://enjalot.github.com/dot-enter/
Go on check out the link and hit the hide button and look around!
Making stuff is fun, hacking for a purpuse is good.
Lots of brainstorming! Some concepts, visualizations and games.