One thing we didn't touch on (or I totally wasn't paying attention) is the advent of Twitch Plays, and what that means for both games and the streaming of them. It's a brilliant use of the technology, though I don't know how practical it is. With services like Twitch, the primary pull, outside of watching a stream, is being able to interact with a streamer, as well as the rest of the audience. In Twitch Plays, it seems that there is less room to interact with each other, as everyone is focused on getting the character in play to do their bidding.

Also interesting, that DMCA enforcement that we expected is here, and quite jarring:
http://arstechnica.com/gaming/2014/08/thousands-of-twitch-videos-silenced-as-streaming-site-mutes-copyrighted-audio/

I think it's worth pointing out that Twitch has had these guidelines in place prior to the Google buyout, they just put the onus on the copyright owner to take action. (http://help.twitch.tv/customer/portal/questions/987917-playing-music-in-stream)

Now, it seems that Google is nipping any future lawsuits in the bud; it's a move to CYA. This is only affecting archived streams, for the moment, but I'm sure that Google is hard at work to figure a way to mute live streams, as well.

Ha, I was just coming over to post about twitch muting videos with copyrighted audio. Looks like you beat me to it Scrypt! I'll still share my link though: http://www.gamepolitics.com/2014/08/07/twitch-muting-video-contains-copyrighted-audio

Reddit AMA with Twitch CEO Emmett Shear: http://www.reddit.com/r/IAmA/comments/2cwfu2/i_am_twitch_ceo_emmett_shear_ask_me_almost/

Via Joystiq, it is pointed out that the muting of in-game musics is a "mistake". "We have zero intention of flagging original in-game music." Shear says.