We received notice of this via the AdSense newsletter on November 5. It certainly would be handy to be receiving more revenue as a result of this initiative.
Google has set up through this an interesting extension of its advertising by pitting the advertisers against the readers who do not wish to see advertisements. This is how the AdSense newsletter described this.
We are encouraged to promote to this service by inserting an advertisement like that to the right. By clicking on that, you can become a Contributor and support websites such as this.
You can learn more about this by reading our article on Google Contributor is now live … almost. Unfortunately it only applies to customers with a US billing address. Hopefully Canada will be supported soon.