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.
→Affiliate Marketing →Article Marketing →Auctions →Banners →Blog Marketing →Classified Advertisi... →Consulting →Copywriting →Domains →E-commerce Operation... →Email Marketing →General →Market Research →Marketing →Niche Marketing →Paid Surveys →Pay Per Click Advert... →Promotion →Sem & Seo →Social Media Marketi... →Video Marketing 
I personally prefer to do it that way--you can create a more convincing review that's more likely to make sales. It's not always possible or practical, though; for example, would you break up with your significant other just to test a product for getting your ex back? ;-) In cases like that, or if the product is expensive, it's usually best just to use the vendor's affiliate resources instead.
When promoting affiliate offers, just make sure you are fully aware of all the terms and conditions attached to your affiliate program. Some programs can be strict about how they allow you to promote their products. For example, some may limit you to banner ads and links only, while others will allow you to use paid advertising, but won't allow email marketing.