Google searching engine launches a big algorithmic improvement to its ranking to determine low and high quality sites.

“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,” says the statement posted on Google official blog. .

First a new system will be launched in U.S. only. In its statements Google representatives note that the search engine “depends on the high-quality content created by wonderful websites around the world, and we do have a responsibility to encourage a healthy web ecosystem.”