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SOCIAL BLUNDER: Buzz was unveiled with great fanfare 20 months ago as Google&#039;s social networking alternative to Facebook. But Buzz quickly got into trouble because Google tied it to its email service in a way that automatically exposed users&#039; contact lists. Many people didn&#039;t like the idea of having their most frequent email recipients shared without explicit permission.
MOVING ON: Google is now focusing its social networking efforts on Plus, a 3 &frac12;-month-old service that has been warmly received. 
					