This can change your life. An opportunity to earn handsome extra cash. A lot of people are now doing it full time. You can live your dream life. If you have ever been approached by someone and these sentences chances are they are asking you to join MLM or multi-level marketing. This video explores math behind MLM. I would highly encourage going through John Oliver's video in addition to this.
John Oliver's Last week tonight : https://www.youtube.com/watch?v=s6MwGeOm8iI