Americans aged 13-18 spend more than 72 hours per week using electronics media.

Virgin Mobile USA reports that more than half of their customers aged 15 to 20 sends or receives at least 11 text messages a day, while nearly a fifth text 21 times a day or more.

An estimated 75 percent of teens spend two to three hours a day downloading or listening to music online

TV, movies, video games, and internet use can have serious consequences for children's health. From obesity and social isolation to early sexual initiation and aggressive and violent behavior, 15 new studies link exposure to media images with a broad range of negative health, behavioral, and lifestyle issues in children and teens.

Fifty-five percent of all online American teens use social networks and have posted a profile online. Forty-three percent say they have been contacted by a stranger online.

A multi-university study found that 10- to 19-year olds who played video games spent about 30 percent less time reading and 34 percent less time doing homework than non-players.