i read a book called 'how i made 77 million in 1 year' or some shit and that's what he showed you how to do.
I wish I could find that book again. it actually had some real gems in it.
auto-ship mailorder is evil genius.
The magazine business model?
I only did research on it when my step dad was talking about how nearly impossible it was for him to take the charge off of his credit card, and how tough of a time he had with the companies and his bank/CC to get it off and make it stay off. That just got me curious into thinking about it from a business and in awe perspective (which is usually how my mind operates) instead of trying to figure out WHY they would do that, I wanted to learn HOW they did it.