More tweens in the US spend and hour a day online than with any other medium

"Tweens consume information through many channels, but the Internet leads. When asked how much time they spent with various media types, 83% said they spend at least an hour per day online, and 68% reported at least an hour per day watching TV. Radio, magazines and newspapers came in much lower with 29%, 10% and five percent indicating they spent an hour per day with these channels.
Nearly half of respondents go online many times per day (more than three), and 87% usually spend at least a half hour each time."
Source, ChiefMarketer, 29th July 2008, citing data from Doubleclick Performics