Slashus - 2:49 pm on Feb 14, 2012 (gmt 0)
I don't think you guys understand what that sentence means.
It means that if anyone (like a visitor to your site or anyone) emails you about an AdSense ad on your site - that you are to direct them to Google.
If it meant what you guys think it means (paranoidically) they would simply say it explicitly.
Where in that sentence does it say an advertiser can't buy an ad on your site directly?