Reading this article was very very painful... and honestly, everyone here is hitting the nail on the head - they are just exposing how much info they are collecting about people. Facebook is the next Experian/TransUnion/Equifax. In the past (I worked in corp. security and investigations) you had to go to ChoicePoint and have law enforcement-like credentials to get a good background profile and picture of someone else. As more and more of this info is aggregated by Facebook, investigators will go to them for a much richer profile that could have ever hoped for.
Onion really has a great parody of this: http://www.theonion.com/video/cias-facebook-program-dramatic...