In the world of affiliate marketing, ad view is one of the most important terms. Its because it refers to the number of times the visitors have seen an ad, in the same manner the term print impressions refers to the success of advertising campaigns in print media. Still, some marketers argue that ad views are getting a bigger credit than they deserve. This is because the ad view stats might not be 100% accurate. For example, if the same advertisement appears on a couple of web pages at the same time, browser caching might happen, which would result in incorrectly diminishing the number of ad views.