I2P Anonymous Network

http://www.i2p2.de/

"I2P is an anonymizing network, offering a simple layer that identity-sensitive applications can use to securely communicate. All data is wrapped with several layers of encryption, and the network is both distributed and dynamic, with no trusted parties.

Many applications are available that interface with I2P, including mail, peer-peer, IRC chat, and others."

Semi-related, it's open source. The cool thing about it is that everything you do stays completely anonymous and you can even habe your own 100% *.i2p site.

>>20
While that's true I think you misunderstood what you were saying, and in fact it hardly even makes sense. "Correlation is not causation" says formally, A correlation between two elements, a and b is not equal to a Causation between those same two elements. It's interpretable perhaps using higher order logic, but I believe what you meant to say was that Correlation does not imply causation.