Just earlier I noticed my Google AdSense account notifying me that my account was upgraded? Could someone who'd experienced this before give me a detailed example of why it was upgraded and what this means exactly? -Google AdSense account-
That's for the new CPA ads. More referral ads like Google Pack or Firefox. Now on "Referrals" section you can choose many ads browsing on a bunch of categories.
I am reading all about this nowadays, are you sure if it is open for all publishers. But to answer the question now they have jsut added products to the referral thing, and people can advertise like that.