The idea of long term residual income is a powerful one.  Who does not want to do work once and reap the benefits for years to come. The sad reality is this idea is used to convince people to join a business opportunity that can’t provide long term residual income. Don’t waste 3-5 years of your life for something that you will not find in a MLM scam.
Thanks for writing this Mr. Samurai. I just got over the student loan hump but I feel pretty good about it at 27 having a graduate degree and being 100% debt free. Now that I’m on the other side it is good for my brain to absorb some of your knowledge regarding passive income investments. I love gleaning wisdom from older folks who have been there and done that. Mentors rock!

The churn rate of downlines is only exceeded by the churn rate of customers (that aren’t already participating in the MLM of course). Sure, Aunt Mary may give you an initial sale just to get you started, but eventually even she stops buying. But those few sales, plus the other expenses MLMs charge their reps, is enough to sustain the corporation. However, this system is only sustainable if the rep force continues to turnover.
Basically, an affiliate connects a customer with a desired or needed product. The affiliate is responsible for marketing to drive sales to the retailer. It is best to purchase a domain name and build a user-friendly website to draw customers and convert them to purchasing the chosen product. Build interest through pay-per-click advertising, content articles about the product, and through posting on forums with a relevant website link.
Stock dividends: Some stocks, especially stocks from big corporate standouts, pay dividends to shareholders based on the number of shares they own, and the percentage of the stock price on the dividend date. For example, if a company pays out 3% on a stock that's trading at $100 per share, you'll earn $3 for every share of that stock you own. Add it up and that can be good take-home pay as a passive investment.
Another great way to get started is to identify an area of interest you have. For instance, Robert Duff has been successful in building passive income by selling books on Amazon. Then, go out and start talking to people. Ask them, “What are you struggling with right now? What are your biggest pains? What’s something you wish existed that doesn’t?” That’ll give you some ideas about where to get started.
Buy a small business: A local small business, like a car wash or a laundromat, is a great way to put money down on a money-making venture. Automate it so you don't have to be on the premises unless you're collecting money. Go into a local business with your eyes wide open - study the books, especially on income and expenses, and examine water and utility bills if your venture will be open 24 hours.
Peer-to-Peer Lending: Earn up to 10% in returns by lending individuals, organizations and small companies who don't qualify for traditional financing through peer-to-peer lending platforms like Lending Club. You can lend $100, $1,000, or more to borrowers who meet lending platform financial standards. Like a bank, you'll earn interest on the loan - often at higher returns than banks usually get.

There is also an idea that we should work to build a passive income asset and then sit on the beach relaxing for the rest of our lives. The truth is that most people would get extremely bored with this scenario and will be eager to find something to do. That’s why the world’s billionaires continue to work… they love what they do and it stopped being about the money a long time ago.