Shor, last week, posted a thread at Search Engine Watch Forums named Landing Page Quality Now Influences AdWords Position. He quotes an AdWords Blog from 12/8 describing;
Today, we started incorporating a new factor into the Quality Score -- the landing page -- which will look at the content and layout of the pages linked from your ads.
Incorporating landing page assessment into the Quality Score will help us improve the overall advertising experience for users, advertisers and partners by increasing the quality of the sites we present in our ad results.
Advertisers who are providing robust and relevant content will see little change. However, for those who are providing a less positive user experience, the Quality Score may decrease and in turn increase the minimum bid required for the keyword to run. To help define site quality, we've created a general set of website design tips and guidelines that should help you evaluate and optimize your site.
Many of the responses at the Search Engine Watch Forums thread were positive outside of AussieWebmaster, the SEW Google AdWords Moderator.