Public Key encryption makes possible untraceable communications intelligible only to the intended recipient. My digital signature demonstrates that I am the same online persona you dealt with yesterday and your colleague dealt with last year, with no need for either of you to know such irrelevant details as age, sex, or what continent I am living on. The combination of computer networking and public key encryption makes possible a level of privacy humans have never known, an online world where people have both identity and anonymity–simultaneously. One implication is free speech protected by the laws of mathematics, arguably more reliable and certainly with broader jurisdiction than the Supreme Court. Another is the possibility of criminal enterprises with brand name reputation–online pirate archives selling other people's intellectual property for a penny on the dollar, temp agencies renting out the services of forgers and hit men.