WSJ - Sep 7 - Momo, the Chinese Tinder, has moved from hooking up users to letting them get hooked on live music. It added a live-streaming function and lets users watch musicians perform live and interact with them. The shift has created a big splash. Momo's net revenue for Q2 tripled from a year earlier. That is mostly thanks to its live-streaming service, which already makes up more than half of the firm's revenue. Momo's stock has risen 56% since it released results.