American rock journalist, Ben Fong-Torres, recently interviewed a PPM panelist and confirmed what many of us already knew – PPM is not 100% accurate. The pager-like PPM devices, while more accurate than diaries, are not infallible. They do not perfectly collect all listening in all situations.
For more information click here for a related story from Hear 2.0 or here for the original article from Ben Fong-Torres.
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