Ernesto at TorrentFreak reports that forecasts “from Cisco’s Visual Networking Index reveal that P2P traffic is predicted to grow to more than 7 Petabytes per month by 2014.”  He further states that “this is more than double the amount of data P2P traffic generated in 2009.”  To be sure, this statistic refers to traffic on the networks in general and not of any specific files like music or movies.