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Adding a new chapter to the research that cemented the phrase "six degrees of separation" into the language, scientists at and the University of Milan reported on Monday that the average number of acquaintances separating any two people in the world was not six but 4.74.

By John P. Mello Jr., PCWorld Nov 25, 2011 9:06 AM For some mall shoppers, Black Friday has become Track Friday. Thanks to a snoopy piece of tech from a U.K. company called Path Intelligence, some malls in Europe, Australia, and the United States will be tracking shoppers' movements today through their cell phones.

An editorial arguing that government should *not* have the authority to surveil private citizens via GPS. Also that it's important to draw a sharp line now, before gov't goes farther into facial-recognition and internet-based surveillance.