Millennial Technographics, 2012 [CHART]
Millennials have the highest social networking penetration of any generation, and the highest Facebook and Twitter use rates to match. Though Twitter started out with a somewhat older audience, millennials now make up more than half of all US users, and will hover around that point for the next several years. They also account for about four in 10 digital video viewers. Read the rest at eMarketer.