Ever wanted to find out who registered a particular domain name? Check out the WHOIS Search from Network Solutions.
For example, you can type in "techcrunch.com" and it will tell you that the domain is registered to Michael Arrington of Manhattan Beach, California.
"Google.com" is registered to:
"Google Inc. (DOM-258879)
2400 E. Bayshore Pkwy
Mountain View CA 9404"
A useful tool for evaluating websites.