Multichannel News: YouNow, a live social network that “connects audiences and broadcasters in real time,” said it has secured $15 million round of funding led by current backers Venrock and Oren Zeev. Comcast Ventures is also said to be joining the round as a new investor. YouNow, which competes in some ways with Periscope and Meercat, claims to have 100 million user sessions a month and handles more than 50,000 hours of new live-video content created every day.