I think you showed how poor your research is when you tried to claim that MLM’s proper name is referral marketing. I guess Money Magazine got it wrong in 1987? http://money.cnn.com/magazines/moneymag/moneymag_archive/1987/06/01/83883/index.htm or maybe USA Today did last year: http://www.usatoday.com/money/industries/retail/2011-02-07-multilevelmarketing03_CV_N.htm ?
But more than product selling MLM/NM provides a lucrative option to earn great part/full-time money and most importantly passive income. Once you sign up somebody in the business by selling a product and he signs-up someone else and so on, you create a network of people who are recommending a product or offering a business opportunity thus generating sales for the company and also earning 10-125 of the total sale happening through your network. In MLM u get percent of every sale that happens in your group of people directly (when u personally sell to someone) or indirectly (your team member sells to someone). So, if you have a network of 10 people and your team sold product worth $1000 then you would earn $100-150 as commissions. For direct sale u get more money.
And these sales aren’t just to customers. You see, in order to join an MLM you usually need to buy products to sell (often referred to as a starter kit, or similar). And then in order to remain a seller, stylist, supervisor, or whatever term the company uses, you often need to make a minimum number of sales in a given time period (though not always).
In an October 15, 2010 article, it was stated that documents of a MLM called Fortune Hi-Tech Marketing reveal that 30 percent of its representatives make no money and that 54 percent of the remaining 70 percent only make $93 a month, before costs. Fortune was under investigation by the Attorneys General of Texas, Kentucky, North Dakota, and North Carolina with Missouri, South Carolina, Illinois, and Florida following up complaints against the company. The FTC eventually stated that Fortune Hi-Tech Marketing was a pyramid scheme and that checks totaling more than $3.7 million were being mailed to the victims.