AdSense have updated their policies today. Here’s a quick summary of the changes:
The main change is for those who send traffic to their pages with AdSense on them via Advertising. You now have to adhere to the same guidelines that AdWords users do with their Landing pages.
The other noteable change is that they now allow publishers to have 3 ‘link units’ per page instead of the previous 1. These link units are an interesting monetization strategy. I find that they do work quite well on some blogs (although on others they’re very low in their conversion) so I suspect that some publishers will be happy to be able to add a second and even a third unit to their pages.
Read more on the changes at the AdSense blog.