PleaseRobMe.com

Social networking is a really great place for robbers to go to find great places to rob. Check out someone's twitter that says "Heading out on vacation, see you guys in a week" and if you know where they live (which with location aware apps, isn't that difficult to find), you have a target. Here is a site that makes us aware of that called pleaserobme.com. It searches "foursquare" updates and uses the logic, if you're at your local restaurant, you're probably not home.