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"This goes against years of research showing that screens, in any capacity, do everything but help us fall asleep. In 2012, the American Medical Association's Council on Science and Public Health said that "exposure to excessive light at night, including extended use of various electronic media, can disrupt sleep or exacerbate sleep disorders." Sleep researchers say that looking at a blue light, which is produced by smartphone and tablet screens, sets off brain receptors that are designed to keep us awake and interferes with circadian sleep patterns. Experimental research has found that if people use a tablet for up to two hours before bed, it takes an extra hour to fall asleep."

"But a slew of new apps - including Wut, Secret, Confide, Popcorn and Telegram - that have come out in recent months are offering hope to the Anthony Weiners of the world, and to the rest of us, too. They are intended to let users either talk secretly with people they know, or blurt out random comments to total strangers."