Duplicate content is a problem for search engines, and that makes it a problem for SEOs. Google strongly dislikes including the same content more than once in search results, and if content exists in more than one place on a site, search engine algorithms have trouble determining which version they should include or exclude. They also have difficulty knowing where to assign link juice and authority. This confusion can lead to sites experiencing a loss of traffic and reduced SERP rankings. The “rel=canonical” element is intended to help search engines out by letting them know which page is “the page” when it comes to particular content.
Duplicate content from the perspective of search engine crawlers can be created in a couple of different ways. Sites can actually have the same content on two different pages of their site or they can have links that differ yet point to the same content — these both look the same to the crawlers. Continue reading