Has your home been robbed lately by the personal information found through the back door of online search engines and social networks? Hope not. Dave Harry provides a warning for anyone using Google, Foursquare, Twitter and other social platforms. He calls it, for example, "Google Dorking," a practice that refers to using Google, and related social media operators, to find information that people shouldn't leave open to search engines. Along with several screen shots to demonstrate his point, Harry tells us how he discovered it and how to protect yourself.