The popularity and emergence of online streaming services have helped the growth of esports in this period, and are the most common method of watching tournaments. Twitch, an online streaming platform launched in 2011, routinely streams popular esports competitions. In 2013, viewers of the platform watched 12 billion minutes of video on the service, with the two most popular Twitch broadcasters being "League of Legends" and "Dota 2". During one day of The International, Twitch recorded 4.5 million unique views, with each viewer watching for an average of two hours.