Inside AdWords – http://adwords.blogspot.com/
From time-to-time, we improve our algorithms for evaluating landing page quality (often based on feedback from our end-users), and next week we’re launching another such improvement. Thus, over the coming days a small number of advertisers who are providing a low quality user experience on their landing pages will see increases in their minimum bids. It is important to note, however, that the vast majority of advertisers will not be affected at all by this change, as they link to quality landing pages…
(The official source for information about AdWords)
If you do see an increase in minimum bids and you feel that your landing page is providing a great user experience, please contact AdWords support and we’ll take a look. Also, for useful guidelines which will help to define what users look for in a high quality site, we hope you’ll take a look at the landing page and site quality guidelines, from the AdWords Help Center.
Related links:
- Landing Pages Now Influence AdWords Quality Scores
(by Matt Mickiewicz) - Google Gets Tougher With AdWords Landing Pages
(by Clickz.com) - Best Practices for Landing Pages Testing
(webmasterworld.com)