They are downloading from the torrent sites listed here:
http://torrentfreak.com/top-popular-torrent-sites-2015-150104/
Except for the Pirate Bay of course, but that will probably be back in some form on the 1st of February. Why would I say that? There is counter at the Pirate Bay which will reach zero then.
Torrent sites will continue to be a $0 competitor for QFX.