Diary vs PPM

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pbergin
Posts: 145
Joined: Thu Oct 01, 2009 5:44 am
Location: DC

Diary vs PPM

Post by pbergin » Thu Mar 04, 2010 12:24 pm

Interesting point of view from the president of Canada's equivalent to Arbitron, the BBM.

http://www.hennessyandbray.com/

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