Google Adsense team announced that they provide channels for referrals to publishers. This is a long waiting feature.
As it indicated, the publisher can track the perfomance of your referral units across different pages, sites, or topics. You can also use channels to determine whether one referral design works better for you than another.
Adsense for content, Adsense for search and referrals, they all have channel tracking features.
The publisher have more flexibility to use their AD spaces on their web pages. To better referral and get better earnings.




