Wikileaks (not affiliated with Wikipedia) is an impressive project to collect leaked documents relating to government and corporate corruption. According to the website:
Wikileaks is developing an uncensorable Wikipedia for untraceable mass document leaking and analysis. … We believe that transparency in government activities leads to reduced corruption, better government and stronger democracies. All governments can benefit from increased scrutiny by the world community, as well as their own people. We believe this scrutiny requires information. Historically that information has been costly – in terms of human life and human rights. But with technological advances – the internet, and cryptography – the risks of conveying important information can be lowered.