hyperkik - 11:31 pm on Mar 21, 2011 (gmt 0)
tedster, the official word from the Google Blog is,
This update is designed to reduce rankings for low-quality sites—sites which are low-value add for users, copy content from other websites or sites that are just not very useful. At the same time, it will provide better rankings for high-quality sites—sites with original content and information such as research, in-depth reports, thoughtful analysis and so on.
John Mu advised a site owner on Webmaster Central,
One thing that is very important to our users (and algorithms) is high-quality, unique and compelling content. Looking through that site, I have a hard time finding content that is only available on the site itself. If you do have such high-quality, unique and compelling content, I'd recommend separating it from the auto-generated rest of the site, and making sure that the auto-generated part is blocked from crawling and indexing, so that search engines can focus on what makes your site unique and valuable to users world-wide.