The Rubicon Project Market Intelligence report can be found here at the Rubicon Project. As Rubicon aggregates advertising networks to optimize publishers revenue they have unique insight to the online advertising market. Each quarter they release a report. It is free for the exchange of your name and email.
It is a 25 page report that is worth reading. Of note is their Rubicon 20 Index which tracks the CPM rates across 20 of the top publishers. They noted a 34 percent increase from Q3 of 2009 to Q4 of 2009. Here is a snapshot of their Rubicon 20 Index.
About their report in their words:
Our quarterly Market Reports offer insights and intelligence around emerging trends in online advertising. This latest Market Report examines our Q4 findings and trends for the year ahead, including the ongoing evolution in the ad network market; the importance of optimizing inventory through pricing; and advertisers push for greater control and transparency.
Take a look at the Rubicon Project and get a copy. By the way, the picture is of Rubicon CEO Frank Addante.