evolution of metrics in paid advertising

CPM:

cost per 1000 impressions

impression-basis (eyeballs)

 

PPC:

Pay Per Click

Click-basis (traffic)

 

CPA:

Cost per action

Action-basis sales/leads)

 

How Much Is Your Tweet Worth?

 

You're free to use this image. Just link to this page or the above article.

 

Credit: Brian Carter

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Taken on May 18, 2009