Scams and swindles are old news. This is the information age, and even under-the-table hustles have to keep up with the times. They may not always be reasonable, but they're usually legal.
Every kind of shady money-making trick, every sort of bizarre way to turn a profit, unorthodox ways of getting a foot in the door, and the constant tightrope walk through the gray areas.
It takes exploiting human weaknesses and overturning common sense. In short, anything goes if it gets the job done: scheme after scheme, all for the money.