In only a few months, she has 70,000 names. Another guy I know has a list of 600,000 names. You don't have to be a genius to make money when you control large lists. You are not in the product business. You're in the traffic business.
Traffic makes money.
Give me a big, passionate list, and I'll find something, somewhere they want to buy and cash in on it. Stop thinking about your product and how great it is. Start thinking about lists and how you can build or tap into large ones. People buy products. People spend money.