Since then, P2P lending has exploded onto the scene. More companies like Prosper and Lending Club have jumped on the P2P bandwagon, and investors are beginning to realize it’s an excellent source of passive income. As an investor, you fund an account and loan small amounts (like $25) to a variety of borrowers across a broad set of risk levels, creating a diverse portfolio.
You can do anything – mow lawns, walk dogs, shovel snow, babysit, code online, tutor, make deliveries, drive people, flip on eBay, sell a product on Amazon, participate in focus groups, blog, or an infinite number of things. But not all side hustles are created equal since some can make you a lot more money than others. Fundrise. You can invest in real estate for only $500.
The appeal of these passive income sources is that you can diversify across many small investments, rather than in a handful of large ones. When you invest directly in real estate, you have to commit a lot of capital to individual projects. When you invest in these crowdfunded investments, you can spread your money across many uncorrelated real estate ventures so individual investments don't cause significant issues.
Say you sell a boring product that has been seen countless times in homes and on TVs doing its job, like blenders. BlendTec was a company in this situation. Their Will it Blend campaign saw them use their blenders on nearly every Apple product, copies of the latest popular video game, paintballs, and DVDs of Justin Bieber. If you can’t see how that type of content can spread rapidly, you’re in the wrong business.

One thing I’ve realized is this: It’s FAR easier to work for an employer than it is to develop durable passive income streams for the average person. Why? Because working for an employer in a place that “needs” you means that it’s possible to show up and give a 50% effort. You can show up, put in your time, go home, have a beer, watch TV, and rinse and repeat all without REALLY having to put in the effort.
There are dozens of ways to generate passive income. However, the option you select has to do with two metrics: time and money. Either you have a lot of time or a lot of money. Most people usually don't have both. But, if you have a lot of money, generating passive income almost instantly is easy. You can buy up some real estate and begin enjoying rental income. Or, you can invest in a dividend fund or some other investment vehicle that will begin generating a steady income for you.

The ultimate goal of marketers interested in creating successful viral marketing programs is to create viral messages that appeal to individuals with high social networking potential (SNP) and that have a high probability of being presented and spread by these individuals and their competitors in their communications with others in a short period of time.[9]