A select group of publishers get notice:
I would like to address to a phrase from the email though:
I think it's still too early to make any definitive calls on the new program other than people aren't fond of change, but this is Google we're talking about. Do remember these are some of the brightest people in the world.
As part of our efforts to continually improve the advertising experience for our users, advertisers, and publishers, we wanted to inform you that over the next few months we will be testing new ways to serve ads to your site. Specifically, we will be running a limited number of site-targeted campaigns that will leverage 3rd party ad-serving/tracking technology.
As part of the test, you may see an increase in revenue as a result of advertisers selecting your site for site-targeted campaigns.
To track the performance of a campaign, 3rd parties ad-servers may place a cookie on users’ computers to capture standard web traffic information such as time, date, IP address and browser information. Rest assured that the 3rd party ad-servers will not rent, sell, or release user information. All data collected by these 3rd-parties is analyzed in aggregate to track advertising campaign performance and is not tied to specific users. Google will not have access to the information that is collected.
And, as always, these ads will still go through our approvals process to ensure their quality, so you don’t need to worry about annoying or user-intrusive ads on your site.
Please let me know if you have specific questions or concerns, or prefer to not participate.
Thanks,
The Google AdSense Team