Onsite Advertiser Sign-up program could put significant pricing pressure on blog advertising vendors like BlogAds and Adbrite. To attract advertisers, Google allows you to customize the landing page advertisers see with the logo, color scheme, and site description of your choice.
Previously, advertisers seeking to market on Web sites using Google's syndicated AdSense advertising system had to enroll through Google's AdWords program and list sites where they wished their ads to be featured.
If you are an Adsense publishers, Google has already enabled the "Advertise on this site" link for your Adsense blocks. It is not immediately know if this link will appear in ads of all sizes. And if you are unhappy with the feature or feel that this could drive visitors away from your website, Google make is easy to opt-out.
You will not receive any referral money from Google if you website attracts new Adwords advertisers.