Published: January 20, 2010 - "In December, Facebook made a series of bold and controversial changes regarding the nature of its users' privacy on the social networking site. The company once known for protecting privacy to the point of exclusivity (it began its days as a network for college kids only - no one else even had access), now seemingly wants to compete with more open social networks like the microblogging media darling Twitter."
These settings should be checked on a regular basis. One of the concepts that even longtime 'Net users have trouble handling is how utterly permanent data is and how easy it is for anyone to find. There are some people I know who, at first glance, seem overly paranoid about the Internet. But once you dig deeper into the technological and legal aspects of it you find that even they aren't paranoid enough.