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Online Advertising Survival: Combating Click Fraud - University of ...

Online Advertising Survival: Combating Click Fraud - University of ...

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Pay per click advertising in theory is an effective marketing tool and a win-win situationfor search engines, consumers and advertisers alike. Pay per click works because thevisitor is likely to be actively looking for the product or service. It is the lowest form <strong>of</strong>advertising with the highest success rate. Cost per click advertising allows companies tomarket on a web site and pay only when people are interested in the product or serviceand click on their ads. Pay per click advertising has the ability to pick and chooseviewers as they are targeted to potential buyers. This is in contrast to radio and televisionwhich attempts to market to the masses.18The two core measures <strong>of</strong> the effectiveness <strong>of</strong> pay per click advertising are the clickthrough and conversion rates. These concepts will factor in later discussions <strong>of</strong> clickfraud schemes. A click through is when a search engine user clicks on an advertiser’sadvertisement and they are directed through to the advertiser’s Web site. The clickthrough rate therefore, is defined as the percentage <strong>of</strong> people that actually clicked on theadvertisement and measures the effectiveness <strong>of</strong> the advertisement itself. The number <strong>of</strong>valid clicks a business receives also affects how high in the search rankings theadvertisement appears. Conversion rate is defined as the percentage <strong>of</strong> search engine18 Google Adsense, https://www.google.com/adsense/login/en_US/, Retrieved June 7, 200813

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