You can find an e-mail address and other information with as little to go on as a first and last name and state, or you can choose to do a nationwide search. Look up anyone just using an email address.
think of social networking sites like Facebook and MySpace as billboards in cyberspace. Would you want your credit card or employment information on a billboard? Or when you will be gone from your home? What if there was a way to have safe social networking?