Google just started sending this around to publishers looking for feedback and suggestions.<p>It works by allowing people to pay a monthly amount ($5, $10, etc) which is then used to purchase ad space on the Google Ad Exchange, showing either a blank box or a thank-you message when a Contributor user visits a page containing Google ads.<p>The money Contributors pay into the system goes into the pool that is paid out to the owners of the websites they visit, like other advertising revenue.