The Book of Faces

Profile pics on social media sites pose privacy risk, researcher warns
Imagine walking down a street and having a total stranger being able to instantly pull up your name, date of birth, Social Security number, your last blog item and other data on their smart phone.
http://www.computerworld.com/s/article/9218903/Profile_pics_on_social_media_sites_pose_privacy_risk_researcher_warns
It's getting easier for strangers to identify people and infer detailed information about them from their publicly available pictures on sites such as Facebook and LinkedIn, a researcher said at Black Hat.