Everyone dreams of making money while asleep. The term "passive income" is often defined as income that is received on regular intervals without requiring a great deal of work to sustain it. Usually some effort has to be put in upfront, but the payoff from passive income can last for years. Passive income is particularly relevant when it comes time to retire. Two techniques often recommended by financial planners are (a) rental properties and (b) dividend investing. Both can work well, not only as a retirement plan, but as a way to build steady income. Certainly the idea of collecting checks for the rest of your life with minimal effort sounds appealing.
Quite a few people that try to retire early are documenting their journey publicly. For example, Jason is trying to retire by 40 by investing in dividend growth stocks and Mr. Money Mustache retired at the age of 30 through rental properties. Many other great examples exist online; I love reading up on their stories and progress. There is a lot to like about their lifestyle too; a common theme among them is that they live frugally.
So what does this have to do with Open Source? I love Open Source and Drupal and would like to see even more contributors. I think a lot of developers would love passive income so they have the freedom to contribute to Open Source more, preferably even full-time. Many developers also live a frugal life; passive income may be a good option to explore. But also, what about a third passive income technique: (c) websites? I know several people who have a number of websites, some of which they haven't touched for months, yet they still bring in around $500 a month. Owning a few websites could provide a wonderful chance to earn passive income, and it so happens that many of us in the Drupal community have a talent for building websites ... Food for thought.