There are some groups at Facebook that promotes online business or additional online opportunity. They will introduce the product and will apply marketing strategy to you for you to become curious about the product and send a message privately. Once the product is introduce to private message, it is for you if you want to continue earnings. On that area the owner or the person, will pass you to his or her FB group so that you will be updated of what is happening to the sites or product you will sell. If you work on it, you will earn, but if you are just looking around and undecided until now then nothing will happen. Like me, I am interested at first but when I learned that the site needs a network to earn more, I do not send a message at all because I am not good at it.