Social Networks and MLM

The mechanism of MLM organizations (multi level marketing), whose business is largely based on direct contacts, turned out to be almost ideally suited for replication by social networks.
Here you have direct contacts that allow you to reach 2 or 3 circle of friends, guest books with recommendations and reviews (mostly positive feedback, of course ...).

Losing weight can post their photos and others can follow the dynamics ...
Immediately and mechanisms for organizing meetings, recommendations, interest groups.

In general, I think that soon we will feel this very strongly, if it has not affected anyone yet.