A Consumer Reports guide to privacy on Facebook with lots of facial recognition talk. I couldn't embed the video, but it's good, too.
UPDATE:
A sample:
Some people are sharing too much. Our projections suggest that 4.8 million people have used Facebook to say where they planned to go on a certain day (a potential tip-off for burglars) and that 4.7 million “liked” a Facebook page about health conditions or treatments (details an insurer might use against you).See also:
Some don't use privacy controls. Almost 13 million users said they had never set, or didn’t know about, Facebook’s privacy tools. And 28 percent shared all, or almost all, of their wall posts with an audience wider than just their friends.
Facebook collects more data than you may imagine. For example, did you know that Facebook gets a report every time you visit a site with a Facebook “Like” button, even if you never click the button, are not a Facebook user, or are not logged in?
Your data is shared more widely than you may wish. Even if you have restricted your information to be seen by friends only, a friend who is using a Facebook app could allow your data to be transferred to a third party without your knowledge.
Legal protections are spotty. U.S. online privacy laws are weaker than those of Europe and much of the world, so you have few federal rights to see and control most of the information that social networks collect about you.
And problems are on the rise. Eleven percent of households using Facebook said they had trouble last year, ranging from someone using their log-in without permission to being harassed or threatened. That projects to 7 million households—30 percent more than last year.
Is Facebook using logical access control policies to gather information about its users?
