Source: http://www.ongamers.com/articles/twitch-...

Based on a new report from Qwilt, a leading video delivery and analytics company, Twitch is by far the leading live streaming site in the United States, topping at over 43% for all live streaming traffic by volume. This is more than ESPN, Major League Baseball, and the WWE combined.

"It has not been the case to see a live stream site sustain such traffic that Twitch has, it's been extraordinary", Qwilt's VP of Marketing and Business Development Mark Fisher toldonGamers. "What we've seen before is most live streaming sites hitting large spike around large events. Twitch has been the first to keep consistent traffic even without the big events."