One handy tool for measuring the success of an Internet marketing campaign is tracking the revenue per thousand impressions (RPM). Here, you simply estimate the potential earned income from every 1,000 impressions and track accordingly.
Note that RPM does not track actual earned income; it is based on an estimate. For example, if you decide you’d earn 25 cents for every 100 page views, your page RPM would be .25 / 100 x 1,000.
This formula can help you set realistic goals and also determine if your campaign is performing adequately. In some situations, you may decide that the earned income does not exceed the campaign expenses by enough of a margin to make your efforts profitable.
RPM is a common Internet marketing metric and is included with most related tools and services.