Big data is huge in both scope and power. Yury Kuzmin/iStockPhoto.com hide caption

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Workers process orders at an Amazon.com fulfillment center in Swansea, Wales, as they prepare for their busiest time of the year. Matt Cardy/Getty Images hide caption

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District Taco employees 33 workers. Osiris Hoil/District Taco hide caption

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Some big-name tech companies are asking Congress to step in and clarify Americans' online privacy rights. Nicholas Kamm/AFP/Getty Images hide caption

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This video frame grab provided by the Mitt Romney presidential campaign shows a scene from an ad called "Believe in America" that is running in New Hampshire. Romney Presidential Campaign/AP hide caption

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Roger Craig poses with Jeopardy! host Alex Trebek after winning $250,000 in last week's Tournament of Champions. Carol Kaelson /Sony Pictures hide caption

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