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Google has announced an update to its ranking engine in an effort to reduce spam in search results. The update targets specific "black hat" search engine optimization (SEO) techniques, or methods used to increase the visibility of websites without any corresponding increase in content quality or relationship with the search query. Google states that the update has affected three precent of search queries in English, just over three percent of results in German, Chinese, and Arabic languages, and five percent of queries in Polish.
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