It’s a great way to make passive income. Of course, when I say “passive”, this doesn’t account for the time needed to spend building or maintaining your WordPress site. However, in terms of having to promote these affiliate links, you can put in as much or as little work as you want to drive traffic to them. This obviously makes this a great option for a passive income stream if you’re not in the business of e-commerce.
Amazon has spent years perfecting the art of online selling and you’ll learn a lot about online marketing by observing how they do it. They constantly test different ways of promoting products and have evolved their site quite a lot over the years. See what widgets they use to promote related products, watch how they use reader reviews, and see the way that they describe products.