Online data-led targeting has been welcomed by marketers across the world. The more we know about the audience, the more relevant we can make our ads and reduce impression wastage. For laymen, however, the vast tranches of their data being sold by platforms such as Facebook and Google is creepy at best and a breach of privacy at worst. This sentiment was highlighted on a recent Four Corners episode on ABC Television, which exposed how Facebook packages its users’ data to sell to advertisers.