Worldwide, there are over 3 billion internet users—and over 2 billion of them have active social media accounts. In 2018, it is estimated that there will be around 2.67 billion social media users around the globe, up from 2.34 billion in 2016. Amongst them, there must be an awful lot of existing and potential colleagues, clients, collaborators and customers. Popular social platforms have become essential marketing tools, offering businesses valuable data about their customers