Then, you add your name to the bottom of the list, moving the others up, and the top one off. You then print and mail out as many as you can, hoping others will do the same as you. The letters are liberally sprinkled with references to how much money you will make, and how many people are sure to participate. You buy into one, then you need to recruit others below you, to move you up the line. The people you recruit, in turn, need to recruit others, and so on.
Pyramids go by all kinds of names and formats.
However, no matter what the title, name, or framework they are all still a pyramid scheme. In fact, I've heard them referred to as Network Marketing Strategies, Multi-Level Marketing, Forced Matrix, Wealth Building Matrix, Gifting Programs etc. Each takes on a shape of its own. That makes you a passenger. When you recruit 8 more people, you become a stewardess.