Facebook unleashes mighty data trove to learn how you laugh

Whether you 'haha', 'LOL' or 'hehe', you're only doing it 15 per cent of the time online Facebook data scientists Udi Weinsberg, Lada Adamic, and Mike Develin say most social media addicts will write 'haha' once a week, that New Yorkers are emoji addicts, and none uses 'lol' anymore.…