Multilevel marketing, or MLM, is the selling of goods and services. You have a distributor who signs up people under him to sell a product. If you are the distributor, you will make commissions not only off your sales but the sales of those below you. The people you signed up can now recruit people under them. They in turn will make a commission off of their recruit’s sales. It can go on and on but the person who makes the most money is the distributor.