Google announces that they will allow separate bids for the Search (i.e. AdWords) and the Content (i.e. AdSense) networks. Early Christmas present for AdWords people, and probably lower returns for AdSense publishers.
Why do I think it means lower returns for AdSense publishers? Simply because the AdWords side performs better, but most advertisers haven't gone through the pain of establishing separate campaigns for the lower value content side. This move should make that process easier, and the bidding on the content side should reflect its lower conversion rate.
Andrew Goodman called out the need for this back in 2003, I think. Nice to see Google reacting to feedback from it's user base with such alacrity.
When I go into AdWords to see this feature in action, it's not exactly easy to find, so I suspect the effect on AdSense publishers will be very gradual. Here are the instructions.