Wikipedia's information on Multi-Level Marketing (MLM)

Wikipedia's information on Network Marketing

Wikipedia's information on Internet Marketing

Federal Trade Commission (FTC) information on multilevel marketing plans

Better Business Bureau Online (BBB Online) information on Online Business Practices

Articles:

Your Real Business Is NOT What You Think!

Building and Growing Your Downline

Free MLM Traffic and Leads - Method #1

Leads For Your Home Business - Method #2

Getting Nonstop Leads For Network Marketing - Method #3