This is a hilarious video from The Daily Show that explains social networking sites, namely MySpace. I was introduced to it by two librarians at the CARL conference. Here are two different locations for it, in case one link fails. Seriously, this is FUNNY and worth 5 minutes of yor life:
http://planetvids.com/html/Myspace-Trend-Report.html
http://www.youtube.com/watch?v=Mfm8IZTuPbE&search=comedy%20central
