Many of the changes we make are so subtle that very few people notice them. But 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.
