Network Marketing/Multi Level Marketing: some companies

This is a list of companies which utilize multi-level marketing, also known as "network marketing", for most of their sales.

ACN Inc.
Amway (over 50 years old)
Arbonne International
Avon Products, Inc.
BioPerformance
Equinox International
Excel Communications
Forever Living Products (Aloe Vera products)
Freelife
Fuel Freedom International
Fund America Inc.
Herbalife (founded 1980: Cellular Nutrition, weight control, herbal-based products)
Juice Plus
Kleeneze (catalogues of household products)
Mannatech
Mary Kay (cosmetics)
Neways
Nikken
Nu Skin Enterprises
Omegatrend
Oriflame
Pre-Paid Legal Services, Inc.
Primerica
Quixtar
Stream Energy
Tahitian Noni International
Weed music distribution service
XanGo

Source: Wikipedia

Also visit http://dmoz.org/Business/Opportunities/Networking-MLM/