Cost Per Click (CPC) A web site which uses CPCs would bill by the number of times a visitor clicks on a banner, instead of by the number of impressions.
Investopedia Says: For example, a Web site that has a CPC rate of $.10 and provides 1000 click-throughs would bill $100 ($.10 x 1000).
Related Terms: Banner Advertising Click Through Rates CPM Impression