Why BTS are the king of Kpop Social media! HELLO! I n an age when the charts have become an algorithmic spaghetti of streaming plays, radio and downloads, the purest way of measuring who is up and who is down in pop might be the Billboard Social 50 , a sub-chart that measures reach across social networks. At last Sunday’s Billboard music awards , its output was reflected in the category of top social artist. This included four of global pop’s usual suspects: Justin Bieber , Selena Gomez , Ariana Grande and Shawn Mendes . The winner, though, was none of the above. Instead, it was the group who have topped the Social 50 for 31 weeks in the past year: BTS. Yes, BTS, everyone’s favourite seven-boy Korean pop act. Yes, BTS, the most-retweeted artist on Twitter in 2016 , with 6 million followers, 4 million YouTube subscribers and 4 million fans on Facebook. As Kim Nam-joon (AKA Rap Monster) took to the stage to collect their award, the BTS fans, known as the A