Pyramid Scheme Alert
Business, Opportunities, Opposing Views - Pyramid Scheme Alert. Exposes, studies and aims to prevent illegal pyramid schemes.
https://pyramidschemealert.org/
WorldWide Scam Network, The
Business, Opportunities, Opposing Views - WorldWide Scam Network, The. Parodies of and information about the multi-level marketing scams, frauds, and rip-offs.
http://www.worldwidescam.com/