Facebook, the world's biggest social network with more than 2.6 billion users, today launched its own currency, called Libra. The biggest question: how will you use it? Join Nine News for the latest in news and events that affect you in your local city, as well as news from across Australia and the world. Get more at: https://www.9news.com.au/ Follow Nine News on Facebook: https://www.facebook.com/9News/ Follow Nine News on Twitter: https://twitter.com/9NewsAUS Follow Nine News on Instagram: https://www.instagram.com/9news/ #9News #NineNewsAustralia #9NewsAUS