Few series are as important to HBO as Game Of Thrones. As one of the first and few networks to offer a traditional cable channel and internet-only service (that doesn't require cable), other services are carefully watching. Taking after Netflix, HBO has provided commercial-free content to cable subscribers as well as an online version for those who paid. With HBO Now, the channel is able to get their shows like Boardwalk Empire, Girls, and Game Of Thrones in front of the eyeballs of cordcutters--not just cable users. With the return of Game Of Thrones season 6 the company could see a significant spike in subscribers around the April 2016 release date.