This week, several women in the U.K. went public about explicit abuse they received on Twitter. Alastair Grant/AP hide caption

itoggle caption Alastair Grant/AP

Weekend Edition Saturday host Scott Simon documented his mother's final days to his more than 1.2 million Twitter followers. Stephen Voss/NPR hide caption

itoggle caption Stephen Voss/NPR

An anti-government protester wearing a gas mask uses a cellphone to read the news on social media as demonstrators gather at midnight in Istanbul's Taksim Gezi Park on June 13. Ozan Kose/AFP/Getty Images hide caption

itoggle caption Ozan Kose/AFP/Getty Images

More courts are asking jurors to avoid social media services and tools that have become an integral part of modern life, like Twitter, Facebook, email, texting, instant messaging and Internet research. iStockphoto.com hide caption

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Monsignor Daniel Gallagher, a Latin expert at the Vatican, says people from all walks of life are following the pope's Twitter feed in Latin. Sylvia Poggioli/NPR hide caption

itoggle caption Sylvia Poggioli/NPR

In January, this Saudi man in Riyadh had Twitter open on his computer. Fayez Nureldine /AFP/Getty Images hide caption

itoggle caption Fayez Nureldine /AFP/Getty Images

After high-profile accounts have been attacked — including AP's, NPR's and the BBC's — Twitter considers how to thwart hackers and protect users. iStockphoto.com hide caption

itoggle caption iStockphoto.com