Google has been under pressure to improve its search results. From accusations of SEO gaming by big sites to a search results page dominated by the likes of Demand Media and other content farms, the search engine has heard the cry that it was becoming less relevant. Now, Google has announced a "big algorithmic improvement" that, unlike other changes, could be noticeable to its users. 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.