Google has made a significant alteration to its hunting engine that will labour further down in its rankings Websites that pilfer content from other places on the Internet or do not offer high - quality information , the fellowship said in a blog post on Thursday .

The changes to its algorithms touch 11.8 percent of all queries , a significant change consider most people barely notice incremental modification the company make . ab initio , the change only applies to Google users in the U.S. but the company say it contrive to twine it out further .

“ We believe it ’s a big step in the right steering of helping multitude find ever higher quality in our results,”wroteAmit Singhal , a Google Fellow , and Matt Cutts , a master engineer . “ We ’ve been tackling these issues for more than a yr , and working on this specific change for the past few month . And we ’re working on many more update that we conceive will considerably meliorate the character of the Sir Frederick Handley Page in our resolution . ”

For example , many Websites will cut portions of news articles with a small summary , which is ordinarily edit out at once from the story . The publisher of the site may bid little or no original content , but the site can rise in the search rankings .

Other web site known as substance farm may get more original capacity , but it tends to be humiliated calibre . Nonetheless , the Websites do rise in Google ’s rankings but may force honorable content further down . to boot , most people who search for something rarely go beyond the first Sir Frederick Handley Page of resultant role .

Google said it did not adjust it algorithm on the base of a newly launched product call Personal Blocklist , an add - on for the company ’s Chrome web browser app that filters out domains users do n’t want to see in their hunt results .

However , Google found that the change to the algorithm affected 84 percent of those blocked knowledge base “ which is strong independent confirmation of the user benefits , ” Singhal and Cutts wrote .