Shaheen Dhada (left) and Renu Srinivasan leave court in Mumbai on Nov. 19. Dhada was arrested for a Facebook post questioning the shutdown of Mumbai for the funeral of a powerful politician; Srinivasan was arrested for "liking" the post. AP hide caption

itoggle caption AP

Authorities in Hunan province sentenced Tang Hui to 18 months in a re-education-through-labor camp after she repeatedly complained about the way police investigated the case of her daughter's kidnapping and forced prostitution. An uproar on Weibo, China's answer to Twitter, pushed authorities to free Tang days later. Frank Langfitt/NPR hide caption

itoggle caption Frank Langfitt/NPR

As more teens get mobile devices, parents are using apps to track their every tweet and post. iStockphoto.com hide caption

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New research suggests that doctors who communicate online with their patients may not see a drop in office visits. iStockphoto.com hide caption

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Like many other brick-and-mortar retailers, Wal-Mart is trying to attract shoppers increasingly accustomed to online shopping. In one experiment, it's offering same-day delivery in four select markets. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP

Apps that can keep kids entertained during long road trips include (from left) Waze, Story Dice, Mobbles, Cobypic, and Postcard on the Run. NPR hide caption

itoggle caption NPR

All out of nutmeg? The same algorithms that predicts your friends on Facebook can also figure out ingredient substitutions for your pumpkin pie this Thanksgiving. Courtesy of Lada Adamic. hide caption

itoggle caption Courtesy of Lada Adamic.