crobb305 - 3:00 pm on Sep 19, 2012 (gmt 0)
...in the last day or so we launched a pretty big algorithmic improvement to our ranking—a change that noticeably impacts 11.8% of our queries—and we wanted to let people know what’s going on. 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.
Just to clarify, that paragraph is from the first Panda back in February of last year. 11.8% of queries were not affected by this most recent Panda update. I know that's not what Snowman68 was trying to say, but I just wanted to clarify for anyone reading here for the first time.