The warmer your visitors are, the more likely they are to convert on the offer you're promoting. Sometimes, they need more time and more attention. That's the purpose of a Multi-Step Pre-Selling funnel. You're not just sending people to your optin page. Once they join your list, they are redirected to a 2nd page, delivering more content, educating them on the offer and thus pre-selling it for you! This is a highly effective weapon that can 3x your sales.
Affiliate marketing overlaps with other Internet marketing methods to some degree, because affiliates often use regular advertising methods. Those methods include organic search engine optimization (SEO), paid search engine marketing (PPC – Pay Per Click), e-mail marketing, content marketing, and (in some sense) display advertising. On the other hand, affiliates sometimes use less orthodox techniques, such as publishing reviews of products or services offered by a partner.