Affiliate Marketing Secrets

This more myth then true?
How can they operate cause,if there their secret,how would you be able to find this people let alone work for them,to someone join or expand?

I think that’s what it’s called.
The story is set in a future where junk food is illegal, and the main character buys it off the black-market. Describing the secret sauce running down his chin, etc…
Yahoo came up with nothing, gonna try Google.