In some cases, the purchaser arrives at a page where the affiliate cookie gets set, then leaves and makes a purchase via the PPC channel sometime before the affiliate cookie expires. Other times, the purchaser may click a PPC link, fail to make a purchase, but later purchase via an affiliate link. In both scenarios, the affiliate marketing channel played a part in the sale, but the role was different.

Sellers are responsible for claims they make about their products and services. Third parties - such as advertising agencies or website designers and catalog marketers - also may be liable for making or disseminating deceptive representations if they participate in the preparation or distribution of the advertising, or know about the deceptive claims.
The Guides also describe information that sellers should disclose in their ads so that consumers are not misled. For example, if you sell synthetic or imitation gemstones, you must tell the consumer that the gemstone is not natural. In addition, you should tell consumers if the pearls that you are selling are cultured or imitation, so that consumers are not misled about the type of pearl being offered.
This is the standard affiliate marketing structure. In this program, the merchant pays the affiliate a percentage of the sale price of the product after the consumer purchases the product as a result of the affiliate’s marketing strategies. In other words, the affiliate must actually get the investor to invest in the product before they are compensated.
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.[citation needed]
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