in 06 Facebook was still pretty small as compared to nowadays. I believe Myspace was still around at that time and was big as shit. Employees didnt at that time consider checking social websites for your FB status and whatnot. Which on a side note I believe is a crock of shit since its a basic invasion of privacy from an employer.
Business in the end has no "business" intruding in your personal life. There are some that want your password when you sign up. Its the same as if say you applied to McDonalds and before they approve your application you have to agree to take an exec over to your house so that they can meet your friends, family, and view your social setting as well as your furniture. Its none of their goddamned business! Business as a whole has become too intrusive into our daily lives and people in general are too okay with that.