Twitter Users Getting Younger

"Consider. . .that the median age of a Facebook user is now 33, despite the social-networking site's roots as a college hangout, according to the Pew Internet & American Life Project. The median age for Twitter is 31. And while Facebook's audience is aging, Twitterers are getting younger. Internet tracker comScore Inc. found that 18- to 24-year-olds made up 18 percent of unique visitors to Twitter in September, compared with 11 percent a year earlier. Meanwhile, kids ages 12 to 17 accounted for 12 percent of Twitter visitors last month, about double the proportion of a year earlier."