Although this option is free, there are two main problems with it. Adsense accounts are free and the person with the adverts gets paid a very small amount each time one is clicked by a visitor. Robert and Emi Kiyosaki are both teachers, so I guess it is hard for them not to teach. https://medium.com/@edyta8905/najciekawsze-atrakcje-w-niemczech-co-warto-zobaczy%C4%87-422f9b8b7c20