Is Network Marketing a Viable Business Model?

All About Finding Health, Wealth and Happiness:

"I first decided to build a Network Marketing based business after getting a printout from the Social Security folks giving me their best estimate of what my income would be once I reached the age to draw Social Security Benefits. My first thought? I ain't living like that...it would have been only a fourth of my current income at that time. So I began to search for the best way to supplement that income while getting out of the corporate world at the same time. Later that year a friend patiently explained the networking business model to me and I've never looked back!"