CPC is Cost Per Click it is a method based on the principle that client pays each time someone clicks on their links, published by Google, Overture (Goto / Yahoo), Facebook, etc. in their search pages and other strategic places across web and with email (concept of adsense).

Cost per click (CPC) is a method website use to bill based on the number of times a visitor clicks on an advertisement. The alternative is the cost per thousand (CPM), which is the number of impressions, or viewers, in thousands, regardless of whether each viewer clicks on the advertisement or not.
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