Degrees of Separation Are Likely More Than 6, Especially in E-Mail Age: "In the current issue of the journal Science, researchers at Columbia University report the first large-scale experiment that supports the notion of "six degrees of separation," that a short chain of acquaintances can be found between almost any two people in the world. But the same study finds that trying to contact a distant stranger via acquaintances is likely to fail."
K-Collector