Categories and tags within the Wordpress platform have substantial SEO benefits when used correctly. When used in the wrong way, tags and categories create\u00a0duplicate content, which could result in penalties in ranking by Google and other search engines. It\u2019s important to use tags and categories with caution, but not to fear them. What is duplicate content? According to Google: \u201cDuplicate content generally refers to substantive blocks of content within or across domains that either completely match other content or are appreciably similar. Mostly, this is not deceptive in origin.\u201d How does Wordpress create duplicate content? Due to Wordpress\u2019 background in blogging and content creation it\u2019s an incredible tool for posting unique content on your website. The nature of the Wordpress platform creates several pages, which if categories and tags aren\u2019t used appropriately and if archive pages aren\u2019t indexed in the right way, could cause duplicate content. Generally speaking, search engines can figure out the permalink of an article and differentiate between archives and single entries. How do tags and categories create duplicate content? Tags and categories have the possibility to create duplicate content on websites in a few different ways, including: \tCategory archives with one post will be the exact copy of the original post \tTag archives with one post will be the exact copy of the original post \tCategories and tags that are too similar could end up having identical content \tWhen using excerpts, using multiple categories indexes that copy multiple times instead of just once when using a single category \tOver-tagging posts \tNot using excerpts on archive pages, allowing them to contain full posts What precautions can you take when it comes to tags and categories? Tags and categories shouldn\u2019t be feared. When used in a strategic way, they can provide great SEO value for your website and generate more accurately targeted conversions. Additionally, tags and categories can be used as well-constructed navigational elements to improve user experience. Take the following precautions: \tDon\u2019t use tags on new websites. Build up your content feed and then start classifying content with tags and categories that are useful to the user and easy to crawl by search engines \tDon\u2019t over tag posts. Group posts together using particular tags that could be of use to the reader \tUse tags and categories that represent a keyword a user might search for \tTagging should be limited to only the most relevant topics in the post \tConsider categories the table of contents for your blog and tags the index \tDon\u2019t generate tag pages with the same content \tBe consistent in linking How can duplicate content issues caused by tags and categories be fixed? Google\u2019s major Panda algorithm updates have targeted low-quality or thin sites, which means duplicate content can factor into a decrease in traffic. With the next algorithm update expect to hit soon, it\u2019s important to fix any duplicate content issues. What can you do? \tUse the Term Management Tools plugin to merge categories, tags, and other taxonomies \tRemove tags that only have a single post associated with them until you have more content to attribute to that tag \tDeal with archive issues by instructing search engines no to index or follow those pages \tDevelop a strong tag and category strategy to maximize SEO value and user experience \tCreate great, quality content \tUse the site: command in a Google query to identify duplicate urls and content on your website \tApply 301 permanent redirects when necessary and possible Have no fear when using categories and tags on your Wordpress website or blog. When used appropriately tag and category pages can draw in searchers and maximize conversions. Develop a tag and category strategy that takes advantage of SEO value and provides a great user experience.