Always disclose your affiliate relationship. Most visitors will probably understand that graphic ad will lead to your getting paid, but if you write a review or use an in-text link as a recommendation, you want your readers to know that may lead to compensation as well. This ensures you retain transparency and trust with your readers, but also, it's required by the FTC's endorsement rules.
First off, thank you so much for this insightful blog post, it's exactly what I needed. But, my software vendor's affiliate program has a funnel of their own, requiring the prospect to sign up with their email address. Is it appropriate for me to collect the prospects email in the Opt-in page, and then expect the prospect to submit their email a second time in order to signup for the product free seven day trial? If appropriate, do you have any advice for how that should be structured?
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.