I don't care much for Tim Denning but that's a great way to put it. Lets say you make $100 a month on Medium and invest it every month in stock market for 30 years. (Okay, Medium might not even be around but you can still use this strategy for any income)

After 30 years with an average of a 10% return, that $100 each month which adds up to $36,000 turns into $228,032.

That's a crazy amount of money for only making $100 a month. The numbers only get crazier the more your invest.