In light of the recent livestream antics on Playroom, the PlayStation 4 augmented-reality game set in players' living rooms, Twitch.tv has felt compelled to restate its terms of use, which in effect forbids "non-gaming content." For those who use Playroom (shown above), it sounds like a crackdown.

"What do I need a PlayStation 4 camera for?" That's a question I asked myself several dozen times in the days following the launch of the PS4. This is the answer.