If it were me I'd design an MLM 'info' page and put AdSense on it....with 1000's of hits you'll be sure to make some $$ and you can leave the 'pyramid' thang to someone else.
http://www.google.ca/search?hl=en&q=mlm&bt...le+Search&meta=
http://www.google.ca/search?hl=en&q=multi+...le+Search&meta=
Lots of people are using adwords with keyword 'mlm', 'multi level marketing', and even 'home-based business (which is generally the main reason people start up in MLM)
Although google never gives out statistics on highest paying clicks...I can guarantee you that 'home-based' is on the top of the pile....
A site that will give you a better idea:
http://www.googspy.com/SearchResults.aspx?q=mlm
http://www.googspy.com/SearchResults.aspx?...-based+business
My 2 canadian cents