martinibuster - 3:40 pm on May 24, 2010 (gmt 0)

This means the revenue share has dropped from 75% to 68% in just over a year!

Please read this part:

AdSense for content publishers, who make up the vast majority of our AdSense publishers, earn a 68% revenue share worldwide. This means we pay 68% of the revenue that we collect from advertisers for AdSense for content ads that appear on your sites... Since launching AdSense for content in 2003, this revenue share has never changed.

I wonder if the private deals they made with some of their content partners like MySpace was large enough to skew the payout estimates?