Ahhh, the good old days ... before the treacherous pitfalls of "reply all." NPR hide caption

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Brazilian President Dilma Rousseff delivers a speech during the opening ceremony of the "NETmundial Global Multistakeholder Meeting on the Future of Internet Governance", on Wednesday in Sao Paulo, Brazil. Nelson Almeida/AFP/Getty Images hide caption

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Comcast is the largest cable company and home Internet service provider in the United States. A recent survey found that many Americans give Internet service providers low marks for satisfaction. Matt Rourke/AP hide caption

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NASA's Lunar Atmosphere and Dust Environment Explorer probe, seen in this artist's rendering, is orbiting the moon to gather detailed information about the lunar surface. Dana Berry/NASA hide caption

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Brazilian President Dilma Rousseff was angered by reports that the National Security Agency was spying on her. She has called for giving individual countries greater control over the Internet. Getty Images hide caption

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A new project announced by Facebook seeks to make it more affordable to access the Internet via cellphones around the world. In Africa, 16 percent of the population currently uses the Internet. Here, a man looks for a network signal in Somalia. Roberto Schmidt/AFP/Getty Images hide caption

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Suffixes like .org, .net and .com are the most common on the Internet today. But the Internet Corporation for Assigned Names and Numbers, which governs Web names, plans to add some 1,400 more, some ending in Arabic or Chinese characters. iStockphoto.com hide caption

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