Nearly half—48%—of Americans age 12 and older are now members of at least one social network, according to a new national survey from Arbitron and Edison Research. Showing the rapid rate at which the trend has spread, just 24% of Americans 12 and up had joined a social network two years ago. “Social networking has become a part of mainstream media behavior,” said Tom Webster, VP of strategy and marketing at Edison Research.
What’s more, social networking is not being entirely wasted on the young. Indeed....