Making sure that your content is easy for your customers or followers to share seems like a good way to help your online marketing. Having customers spread the word probably helps people see real life examples of your work. I would imagine that finding a professional who can help you create a better online presence would be a good way to boost your marketing as well.
Great post, Sean! I have been using Adsense for the most part for two years now and each year, due to great content, my income has doubled. Thanks for all the great content, and this is sure to open my eyes a bit more to the likes of Amazon, which, I will admit, I have been ignoring due to the way they treat their affiliates. But, maybe it’s just me being a turd….
Another fantastic benefit is that you don't have to rely on selling one product that you have created yourself, or that you have bought in to resell. You don't have to lay out any money by purchasing stock, you don't have to parcel any items or deal with returns. All you need to do is place relevant affiliate links into your blog posts and then continue promoting the blog posts like you normally do! There's no extra work involved apart from getting the link!

Writing blog posts is especially effective for providing different opportunities to land on page one of search engines -- for instance, maybe your eyeglass store’s website is on page three of Google for “eyeglasses,” but your “Best Sunglasses of 2018” blog post is on page one, pulling in an impressive amount of traffic (over time, that blog post could also boost your overall website to page one).
I would like to add that for information products, a lot of the time it’s pretty easy to rank for “information product review”. I recently did a review of a popular ebook that is a month long discipline program. I went about it by doing the actual program and documenting everything. At the end of the month I wrote up a 2700 word article summing up the whole experience. 
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