Calculating the Real Cost of Keywords

Performics, the search marketing division of DoubleClick, has thrown a new metric into the mix, designed to track and benchmark the overall marketplace activity of search marketing campaigns.

The new cost-per-keyword (CPK) measurement is a composite of the individual measurements of keyword price, end-user demand and campaign size. The idea behind adding this tool to the kits of metrics already used in search marketing is to give a better notion of the