This shows how just trying to protect your privacy alone doesn't work. Facebook relies on the unintentional betrayal of your friends and associates. You might

This shows how just trying to protect your privacy alone doesn't work. Facebook relies on the unintentional betrayal of your friends and associates. You might not have put your phone number into facebook, but someone you know put your number in with your full name and the facebook app harvested it. Facebook now has your phone number in your shadow profile. Everyone less privacy savvy than you will inadvertently permit a corporation to harvest your personal information to profit from.