Barack Obama Ebay ads on YouTube?

YouTube promoted a 'Barack Obama Paper Scissors Stone' video through their Twitter account yesterday. I clicked on it and fund that there were Ebay listings ads alongside the video instead of the normal display ad (with each listing pointing to a different Ebay item.)

Ebay ads on YouTube (click for larger image)

I have subtly indicated the Barack Obama Ebay listings with a red arrow in the image above. With the recent YouTube 'Click to Buy' additions and now this, maybe the future for YouTube monetisation is Affiliate programs rather than display or CPC models?