Today Facebook rolled out it’s newest feature, Places, to US users. It allows you to check in at venues on using the Facebook app on your smart phone a la Foursquare or Gowalla. Facebook goes one step further, it allows others to check you in and you to check others in. Don’t want your friends checking you in? You need to disable this feature, this video from Lifehacker shows you how. Don’t care? Enjoy!