Google Pressure Cookers and Backpacks: Get a Visit From the Feds

An anonymous reader writes "Massachusetts resident 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 raises the question: How'd the government know what they were Googling?"