Cost Per Click, or CPC, implicitly defined is the price paid for one single click on an ad impression within a search engine. CPC is often confused with PPC, for information on this reference this article.

CPC can be broken down into a few different categories including Max. CPC, Min. CPC, and Avg. CPC. Again, these are pretty straight forward. Average CPC would be the average cost per click for a particular keyword. Maximum and minimum CPC are the highest and lowest prices paid for a keyword per click.

An understanding of the meaning of these different terms is essential in order to properly take advantage of useful widgets like the Google Keyword Tool, which will reveal keyword frequency as well as max cpc, min cpc, avg cpc, and much more.

The same frequency and CPC metrics used by website owners to bid on keywords are used as Google search engine optimization tips for the best keywords to target for traffic as well as revenue.