Google 'Pressure Cookers' and 'Backpacks,' Get a Visit from the Cops

NOTE: The photo in this article is NOT of the actual incident but apparently is a stock photo used by this publication.... [clipper]

"Michele Catalano was looking for information online about pressure cookers. Her husband, in the same time frame, was Googling backpacks. Wednesday morning, six men from a joint terrorism task force showed up at their house to see if they were terrorists. Which prompts the question: How'd the government know what they were Googling?"     [Atlantic Wire]