How to prevent your friends from checking you into Facebook Places

How to prevent your friends from checking you into Facebook Places http://j.mp/cb0Zot - Did you know that with Facebook's new Places feature, your friends could check you into places, letting the world know your location?  If you don't like the idea of people knowing where you are all the time and don't want to let your friends contribute to this information overload, make sure to change these settings.