Twitch

During the E3 Electronic Entertainment Expo in Los Angeles, attendees will walk past televisions showing live streams of the Twitch Interactive video service.Patrick T. Fallon | Bloomberg | Getty ImagesTwitch, Amazon's video streaming…

Around 2 p.m. on Sunday afternoon, Ludwig Ahgren, a Twitch streamer in Los Angeles, turned on his camera and started streaming. He didn't stop.For the past five days, Mr. Ahgren has kept a near-constant livestream of his life. He plays…