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CPM stands for Cost Per Thousand Impressions (M is the Roman numeral for 1000). Advertisers are charged for every 1000 viewers exposed to their ad. For instance, if an ad is for sale at $5.00 per CPM - the advertiser pays $5 for every 1000 people that view the ad. The Average CPM reported here is this historical average cost of 1000 impressions for ads running on this website.

Historic average of number of times that a specific ad is displayed during a week.

The Repurchase Rate is the rate of returning customers for a particular site. A high repurchase rate is a good indication that advertisers perceive high value advertising on the site.

Alexa Ranks are created by a subsidiary of Amazon.com and measure the traffic ranking of websites. The most trafficked site in the world has an Alexa Rank of 1. Some new websites and sites with very little traffic do not have an Alexa Rank. In addition, sites that are part of a larger domain do not always have an individual rating.

CTR stands for Click Through Ratio. The CTR is the number of times that an ad is clicked divided by the number of impressions. This percentage helps advertisers gauge the success of a particular campaign.