Mini Websites are basically small websites that are created to promote products or services as an affiliate.
Being an affiliate means that you don’t have to create anything or even handle any stock, you simply send people to a website through your affiliate link and you make a commission if they buy anything.
Generally, affiliate income forms a large percentage of the total online income and once set-up the income stream will be on auto-pilot.
Picture from en.wikipedia.org
Mini Websites are quite easy to set up and promote properly but once that is done, you can practically leave them for good and they will continue to make money.
You will do little to sustain this income.