Affiliates were among the earliest adopters of pay per click advertising when the first pay-per-click search engines emerged during the end of the 1990s. Later in 2000 Google launched its pay per click service, Google AdWords, which is responsible for the widespread use and acceptance of pay per click as an advertising channel. An increasing number of merchants engaged in pay per click advertising, either directly or via a search marketing agency, and realized that this space was already occupied by their affiliates. Although this situation alone created advertising channel conflicts and debates between advertisers and affiliates, the largest issue concerned affiliates bidding on advertisers names, brands, and trademarks.[39] Several advertisers began to adjust their affiliate program terms to prohibit their affiliates from bidding on those type of keywords. Some advertisers, however, did and still do embrace this behavior, going so far as to allow, or even encourage, affiliates to bid on any term, including the advertiser's trademarks.

Shopify has three different account types as well as standalone third-party products like themes and apps. Commissions are paid for sales of any of these products, including users who sign up for a 14-day free trial and then convert to a paid account. Shopify also has a wide range of blog posts, webinars, and video tutorials that can be linked to with the standard commission paid on any sales that are generated.
Por otro lado, no hay que perder de vista que, en los últimos años, ha tenido lugar una gran compactación del mercado, en el que cada vez son más las empresas que se lanzan a comercializar sus propios productos de software. Desde 2011, se ha duplicado año a año el número de softwares y empresas dedicadas al marketing digital. De las 150 empresas existentes en el 2011, se ha pasado a las cerca de 5.000 en el 2017 como se puede ver en esa imagen de Chiefmartec: 
Developing and monetizing microsites can also garner a serious amount of sales. These sites are advertised within a partner site or on the sponsored listings of a search engine. They are distinct and separate from the organization’s main site. By offering more focused, relevant content to a specific audience, microsites lead to increased conversions due to their simple and straightforward call to action.
^ Shashank SHEKHAR (2009-06-29). "Online Marketing System: Affiliate marketing". Feed Money.com. Archived from the original on 2011-05-15. Retrieved 2011-04-20. During November 1994, CDNOW released its BuyWeb program. With this program CDNOW was the first non-adult website to launch the concept of an affiliate or associate program with its idea of click-through purchasing.
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