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Casting Out Smokers

A social network map of people, connected by friendship, family or marriage, contains many smokers at the center of their social groups in 1971. Thirty years later, fewer smokers occupy the network, and those who remain tend to be at the margins of social groups.

[Social network diagram of smokers and non-smokers in the 1970s vs. 2000s]

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Social Networks' Sway May Be Underestimated
Article | Facebook, MySpace and other Web sites have unleashed a potent new phenomenon of social networking in cyberspace. But at the same time, a growing body of evidence is suggesting that traditional social networks play a surprisingly powerful and underrecognized role in influencing how people behave.

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