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LONDON, ENGLAND - MARCH 25:  In this photo illustration the Social networking site Facebook is displayed on a laptop screen on March 25, 2009 in London, England. The British government has made proposals which would force Social networking websites such as Facebook to pass on details of users, friends and contacts to help fight terrorism.  (Photo by Dan Kitwood/Getty Images)
LONDON, ENGLAND - MARCH 25:  In this photo illustration the Social networking site Facebook is displayed on a laptop screen on March 25, 2009 in London, England. The British government has made proposals which would force Social networking websites such as Facebook to pass on details of users, friends and contacts to help fight terrorism.  (Photo by Dan Kitwood/Getty Images)

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Facebook 'secret' study newest profiling

Emeritus professor Ian Angell says the 'secret' study by Facebook is the next step in profiling.

Facebook 'secret' study newest profiling

Emeritus professor Ian Angell says the 'secret' study by Facebook is the next step in profiling.