The majority of the income comes through clicks.. SOME ads pay if they are just viewed.. but most are clicks.. The ePCM just tells you the amount you have earned divided by the number of page Impressions...
Quote:
Effective CPM - Cost per 1000 impressions. From a publisher's perspective, CPM is a useful way to compare revenue across different channels and advertising programs. It is calculated by dividing total earnings by the number of impressions in thousands. For example, if a publisher earned $180 from 45,000 impressions, the CPM would equal $180/45, or $4.00.
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