This is creating one website making money for you on a continual basis. What you would do is to research certain keywords and get an idea of what people are searching for. You would then do another search for a product that meets those people’s needs. You would purchase a domain using that keyword. For example, if the keyword was “how to trade forex successfully,” you would use that keyword phrase as your URL and people will find you easier and you would also rank well in the search engines for that keyword phrase.