At 04:11 PM 6/3/2011, michael perelman wrote:
>Why could others not duplicate Groupon's business?
>
>
>
>--
>Michael Perelman
>Economics Department
>California State University
>Chico, CA
>95929
>
>530 898 5321
>fax 530 898 5901
>http://michaelperelman.wordpress.com
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