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'''CTR''' (Click-Through-Rate) represents the number of clicks that a particular advertisement receives relative to the total number of viewers. The Click-Through-Rate is an efficient way to measure and determine the success of an online advertising campaign.  

'''CTR''' (Click-Through-Rate) represents the number of clicks that a particular advertisement receives relative to the total number of viewers. The Click-Through-Rate is an efficient way to measure and determine the success of an online advertising campaign.  

==Short overview==

==Short Overview==

The CTR is an important indicator for the advertisements' effectiveness. Over time, the click-through rates of advertisements have decreased on a continuous basis. At first, a five percent CTR was something common, while today a two percent CTR level is considered highly successful. Having this in mind, the average CTR level is somewhere around 0.2 and 0.3 percent. However, depending on the situation, topic and moment in time - the CTR can have different values, but it is definitely used as basis for future decisions. <ref>[http://www.marketingterms.com/dictionary/clickthrough_rate/ CTR Definition]</ref>

The CTR is an important indicator of an advertisement's effectiveness. Over time, the click-through rates of advertisements has continually decreased. At first, a five percent CTR was something common, while today a two percent CTR level is considered highly successful. Having this in mind, the average CTR level is somewhere around 0.2 and 0.3 percent. However, depending on the situation, topic, and moment in time - the CTR can be quite varied.<ref>[http://www.marketingterms.com/dictionary/clickthrough_rate/ CTR Definition]</ref>

==How does it work==

==How does it work==