TorrentFreak is a torrent news site. They report on news related to torrents and file sharing in general... I would say a "piracy record" is pretty much required reporting from them .
It's not too hard to see why it's so pirated though. HBO is a premium channel, so many people don't have it.
 And before anyone says something, TF is CNN's source. They just post anything they think people will click on (that they think is reasonably reliable, hopefully), thus this article .
Edited by Crazy9000 - 4/2/13 at 6:05pm