Multi-Level Marketing (MLM)

Hi all,
Will we briefly discuss about mulit-level marketing in our course?
Although it is not a traditional way forstarting a business, if we cover franchising, i think we should also mention about MLM. There are many people indeed choosing this path as their careers. Some of them are very successful but many of them are failed.
Most of the startup cost for MLM is relatively small and provide a decent return
But there are some scams like pronzi scheme regarding to MLM too. Should we avoid MLM at all cost or choosing a right one to develop our entreprenurial skills for future venture?

Raymond Leung