In SEO (search engine optimization) terminology, it is content (or text) that has been copied or reused from other Web pages. Duplicate content is often used to help boost keyword density, however some search engines, including Google, filters duplicate text and may penalize your site, resulting in a lower keyphrase position, when you use duplicate content.
Examples of duplicate content would be a Web page that offers a “printer friendly” version of content, or a news aggregation Web page that copies news headlines and content from stories from other sources online without making changes to the text. Duplicate content may also be created when websites offer mobile or local versions of sites or pages.
See also content page.
Contrast with fresh content.
