I have not. While I am intrigued with the possibility of making online income, it seems to be less passive then how I want to spend my time. Regarding your blog / site, you have done quite well for yourself. However, you have to keep pumping out content or your site would eventually go out of business. That sounds like more of a commitment then I would want. Regarding your book sales, it is probably relatively passive now, but certainly was not when you were writing the book. Now if you love it, great. Just not for me.

As an extreme adventurer, he’s also climbed Mount Kilimanjaro, HALO-skydived above Mount Everest’s summit, broken the sound barrier in a MIG-25 jet and deep-sea dived to the shipwrecked Titanic to have lunch. He even became a certified Russian-trained cosmonaut, rocketed to the edge of space and served as a backup for the “Soyuz TMA-13” NASA flight to the International Space Station.
Some people are fortunate enough to create residual income streams. Residual income (also known as passive or recurring income) refers to income that you continue to earn even after the work required is done. Fundrise is the simplest and most cost-effective way for the everyday investor to create a new stream of residual income through real estate investing.
Let’s use Jim from our personal finance example. Jim’s furniture manufacturer builds tables and has several large pieces of equipment in the sawmill used to re-saw logs and boards down to the finished dimensions. The sawmill has net operating revenues of $100,000 for year. The saws in the mill cost Jim a total of $500,000 and he is currently earning a return of 10% in his wholesale table business. Thus, he sets a minimum required return of 10 percent.
In equity valuation, residual income represents an economic earnings stream and valuation method for estimating the intrinsic value of a company's common stock. The residual income valuation model values a company as the sum of book value and the present value of expected future residual income. Residual income attempts to measure economic profit, which is the profit remaining after the deduction of opportunity costs for all sources of capital.