A good article, and very scary.
I warn students, especially, to be very careful of what they post on their FaceBook, Myspace, Twitter, etc accounts. Some have been turned down for interviews, jobs and scholarships due to what was found on the Internet.
It is even worse if you have a slightly common name. Students have reported being misrepresented because someone else in the area has the same name, and poor judgment on what they put online.