3 UK launched recently a new management tool, TrafficSense, which "..looks at types of data traffic and behaviour that stop other users from enjoying a fair allocation of our network. TrafficSense™ will only manage a very small percentage of users on our network – and the vast majority will actually benefit from higher speeds and a better internet experience".
TrafficSense identifies "File sharing, Tethering and High data use". See " About TrafficSense" - here.
File Sharing includes "peer-to-peer download services like BitTorrent or Napster [see "Napster, the Service that Started DPI, is Gone" -here] and downloading and sharing files using certain sites specifically set up to share files". See more below.