What this article teaches you is that if you produce something that is shareable and interesting, driving traffic to it is MUCH easier. You can use social media, you can run link building, you can share it on niche communities and nobody is going to ban it or downvote it. Actually, if your front end is great value, people will share it around without you asking. Then all you have to do is offer a free downloadable resource in this piece of content (that does not decrease its shareability as it's more free goodies) and THEN start selling via email follow up.
Cost per action/sale methods require that referred visitors do more than visit the advertiser's website before the affiliate receives a commission. The advertiser must convert that visitor first. It is in the best interest of the affiliate to send the most closely targeted traffic to the advertiser as possible to increase the chance of a conversion. The risk and loss are shared between the affiliate and the advertiser.
Websites consisting mostly of affiliate links have previously held a negative reputation for underdelivering quality content. In 2005 there were active changes made by Google, where certain websites were labeled as "thin affiliates". Such websites were either removed from Google's index or were relocated within the results page (i.e., moved from the top-most results to a lower position). To avoid this categorization, affiliate marketer webmasters must create quality content on their websites that distinguishes their work from the work of spammers or banner farms, which only contain links leading to merchant sites.