This is THE most important thing you can do with your Facebook privacy settings. If you’re sharing with “friends of friends,” you’re exposing your info to an average of 150,000 people. Let’s be serious: no one has that many friends. And when your data is open to the public, it can–and does–end up anywhere: the Girls Around Me app and Spokeo.com are two creepy examples. You can also use Abine’s Social Search to show you just how much of your info is floating around online.