I'd like to try to coin a phrase. I figure that Slashdot might be a good place to do it, since my comment here will be timestamped by a third party.
A "net Nixon" is someone who logs/records all of their Internet communications.
Example: "John is a complete net Nixon. He has IRC and AIM logs going back to 1995."
The first rule of sharing information publically is that one should never share anything publically without first considering that the audience is everyone.
"The fundamental principle of science, the definition almost, is this: the sole test of the validity of any idea is experiment." -- Richard P. Feynman