「Relevant to your interests」
Anonymoushttp://www.nsa.gov/public_info/_files/Untangling_the_Web.pdf
For stalkers and paranoids. A little out of date, but a jolly pleasant read.
http://www.nsa.gov/public_info/_files/Untangling_the_Web.pdf
For stalkers and paranoids. A little out of date, but a jolly pleasant read.