There's a lot of power in social media, but many tweet or update their status withouth thinking about what they are telling the world. This issue is especially acute when it comes to location-based information. If you're telling the world you're at your local Starbucks, you're telling everyone that you're not at home. Burglars may be interested in that, if they can match your tweets with your home address. A new website, Please Rob Me, vividly illustrates the issue. See also: Please Rob Me Makes Foursquare Super Useful For Burglars.