[nomdeplume]

ALESSANDRO ACQUISTI gave a cool talk at the 2011 BlackHat presenting his research findings which indicate that by taking a picture of your face, that picture can be correlated with your facebook profile, which can be used to take simply your birthday, and using that information, using a computer to guess your social security number with significant accuracy compared to random. here is video http://www.youtube.com/watch?v=fZQ7Th9L5ss