Social media content creators known as "finfluencers" are hugely popular with young people, but they could end up in jail or with a $1 million fine if they don't shut down. Key points: ASIC has cracked down on unlicensed 'finfluencers' About one third of young people on social media follow a finfluencer ASIC's rules don't cover cryptocurrency Finfluencers are social …