Yaro, this is a great post! Personally, I have banners and other advertising avenues. I am surprised though that you don’t mention Adsense as it fulfills all your criteria: It is easy to set up, it is totally automated and you don’t need to do anything and it is totally passive. It will perhaps be of no use to you, but to beginners, I think it should be a good option, don’t you think?
For those with a large Twitter following, you can make money from your Tweets alone with Sponsored Tweets. You could be paid for sharing a business’s information, recommending restaurants or hotels, or tweeting pictures of you using or wearing products. As with all sponsored posts on social media, businesses will only be prepared to pay you to Tweet if you have a large following that you can influence. So work hard on building up a loyal fan base.
If you start getting too big for EBay or decide you want to try a different flavor, Amazon has a marketplace as well. I prefer using Amazon because I can depend on their shipping, have a Prime account, and trust their reviews (overall, not usually singularly, although occasionally that as well). Learn more about Amazon’s marketplace by clicking on this Lifehack, and delve into the marketplace.

Amazon Mechanical Turk is a service that lets you make money online through doing paid microtasks. Each task is something simple that requires human interaction like rating search results, checking for the right spelling on search terms, categorizing the tone of an article, or even basic translating. You can do these tasks from anywhere you want and make money online from the world’s largest e-retailer.
Robo-advisors are diversified investment accounts that are automatically managed by a computer algorithm (as opposed to a human money manager). If you want to invest, but don’t have the money, or don’t want to invest with a money manager, robo-advisors are for you! Robo-advisors make investing easier—and cheaper—so they’re perfect for new investors.
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