You can do Influencer Marketing on a multiple social sites, however, the only social site that has the capacity to make you a millionaire is Instagram. Although Instagram does not have as many users as Facebook, it is growing quickly. If you want to start your influencer journey, you can try Instagram . An Instagram influencer is someone with a large following and lots of engagement on their posts. Once you become an influencer, you can easily promote businesses, products, and services and earn money from each promotion.