They do it late at night when their parents are asleep. They do it in restaurants and while crossing busy streets. They do it in the classroom with their hands behind their back. They do it so much their thumbs hurt.
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To Tweet oder Not to Tweet Is there such a thing as overuse of social networking tools?
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Multimedia The Takeaway: Katie Hafner Readers' Comments Readers shared their thoughts on this article. Read All Kommentare (95) » Spurred Von the unlimited texting plans offered Von carriers like AT&T Mobility and Verizon Wireless, American teenagers sent...