Google will be retiring the AdSense Referrals program during the last week of August. This will be replace by the new “Google Affiliate Network”
“As part of the integration of DoubleClick, the DoubleClick Performics Affiliate Network will now operate as the Google Affiliate Network for advertisers targeting users located in the United States. Similar to the [...]

Google will be removing the Onsite Advertiser Sign-up feature.
“Our recent findings indicate that the Onsite Advertiser Sign-up feature, which allowed advertisers to sign up for AdWords campaigns on your site, hasn’t been performing as well as we had hoped. We’ve elected to gracefully retire this feature and focus our efforts on developing and supporting features [...]