This domain can work for people in two ways. One is to get sudden bursts of income by selling a certain product. The second part is selling a service that gives you recurring fees. This course on Affiliate Marketing Strategy for Stable and Recurring Income can be very helpful if your objective is the latter. At 5.5 hours and 56 lectures, this is very extensive and useful for those looking at mastering this subject. This training program is developed by iMarket XL and Max Stryker.
Sometimes, individual entrepreneurs with great products are worth a look, although you should check them out first and do some research. Entrepreneurs or companies may run their own affiliate program and you can apply directly to them to promote their products and services. Finally, Amazon is always an option as you can be an affiliate for just about any type of physical product on their network.
If you’re writing reviews, you should 100% be using rich snippets (they add review stars to your search engine snippets and increase click-through rates). There are many WordPress plugins for this but my favorite is WP Rich Snippets. It’s $69/year (or $399 one-time) and I use it for every single review I write. They have tons of add-ons, settings, styling options, and looks nice. Free plugins like All In One Schema.org do work but lack settings, styling, and flexibility.
For example, if I talk about how cool a product is, and then you find out that I’m an affiliate for them, wouldn’t you as a conscientious observer become skeptical as to whether my information is biased, if perhaps I’m only saying how cool something is because I can get paid for it? Wouldn’t that make you question my integrity with other things I say as well?