“YouNow says it records 150,000 broadcasts a day and 100 million user logins a month. According to its own internal stats, … 74 percent of its users are under 24 and 56 percent of them are female.” With 510,000 followers, YouNow star Zach Clayton “can launch a broadcast with no warning and coax tens of thousands of people to check in on him within the space of an hour.”