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Of the 100 terms most searched this year on UrbanDictionary.com, Aaron Peckham, the website's founder, says approximately 80 have been consistently popular year after year. But 20 are newly fashionable in 2012. Words like, derp, yolo, brony and romnesia made the cut

http://www.pbs.org/newshour/rundown/2012/12/test-your-vernacular-the-most-popular-slang-of-2012.html