Variety: Forget Mayweather-Pacquiao. There’s a more interesting fight brewing between Twitter and Hollywood. The piracy of Saturday’s welterweight boxing championship enabled by Periscope, a livestreaming app recently acquired by Twitter, is setting up a conflict that could be just as brutal. If Twitter CEO Dick Costolo understood the implications of this activity, he sure didn’t show it in a tweet that declared Periscope the “winner” of the night.