I. Introduction
Video games are a form of entertainment enjoyed by a diverse, worldwide consumer base. Traditionally, gaming has been a pastime enjoyed by those who choose to play. Recently, however, gaming has become a spectator form of entertainment. Major eSports tournaments such as DreamHack are enjoyed by millions of online viewers, yet have seen little attention from mainstream media outlets: enter Twitch. Twitch is a large-scale video streaming platform used (almost) exclusively for live game broadcasting. It allows broadcasters to construct channels through which they can stream their gameplay to the world. Popular types of channels include amateurs broadcasting their gameplay, competitive eSports tournaments with commentaries, coaching game sessions, charity marathon events, and, finally, experimental large-scale cooperative events where games are played collectively. Twitch's popularity is undeniable, recently being reported as the 4th largest website in the U.S. by peak traffic [3].