These come in the form of “Product A vs. Product B” or “Service A vs. Service B” articles. In some cases you may even have three instead of two. The key here is to focus on the very specific similarities and differences between the two. Someone looking at this type of article wants an answer. Even if it’s along the lines of both being great, but one slightly better overall while another option is slightly better for a very specific narrow type of use.
We dive more into affiliate program analysis, and joining affiliate programs below. But, before you move forward you’ll want to ensure there are a handful of relevant products.

Another way that you can do research is to use a tool called Buzzsumo, which shows you what’s popular, based on social shares.
In other words, there are many different ways to get the actual links into the article. You don’t want to over do it and look spammy. However, if you really are providing top-notch content full of value then this shouldn’t be an issue. In most cases to provide that level of information you have to include a lot of great information. Which, of course, gives you plenty of places to put in those links.