Half A Century Of MLM Although some people may think all MLM organizations are pyramid schemes, there are many genuine operations. As far back as the 1940s, Nutrilite Systems and Stanley Home Products created companies in which salespeople received not only commissions on products they sold directly but also bonuses or overrides for sales made by people they recruited. Eventually, this commission structure expanded to several layers of salespeople. Two of the largest MLM companies, Amway and Shaklee, started in the 1950s. Today, each of these companies has around 1 million distributors. Another 1950's pioneer, Mary Kay Cosmetics, has built huge success with "party plans," at which demonstrations are given to several potential customers at one time. Eventually, some of those customers may become distributors and sponsor their own parties. The birth of today's MLM business, though, can be traced to 1979, when a court upheld the legality of Amway's sales plan and, by inference, the entire MLM industry. The key, according to the decision, is that the organization exist primarily to sell products or services, not just to line up distributors. Besides the companies named above, some other "household word" companies have used MLM, including Avon and Tupperware as well as subsidiaries of Gillette and Colgate-Palmolive. Long-distance phone companies US Sprint and MCI have used MLM in their efforts to compete with AT&T. The market for home water-treatment and filtration systems has virtually been created by MLM companies, including National Safety Associates. More than 50% of the water filters sold in the United States are sold via MLM.