Over the past four years adult internet users signing up for social networks has seen a big increase. In the U.S. the stats have quadrupled: from 8% of adults having a social network profile in 2005 to 35% in 2008. The reason for this increase is particularly for, well, social networking and not for professional networking.
Why are there places where teens are not applicable? Although it may be a smaller number than adults, teens can still do those things.
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