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by John Horrigan
Jul 17, 2007
at National Association of Regulatory Utility Commissioners (NARUC)
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the percentage of app downloaders who have paid for an app, with the remainder only downloading apps that are free.
Copyright 2012
The Pew Research Center's Internet & American Life Project is one of seven projects that make up the Pew Research Center. The Center is supported by The Pew Charitable Trust.