Keyword stuffing refers to the overuse of keywords either during the actual body text of an article or within meta tags provided by the webmaster or content management system intended to usually provide useful information to search engines.
This technique is sometimes combined with others such as invisible text and cloaking in an attempt to appear relevant to a particular phrase or set of words. Because search engines are largely able to detect these methods and end users find the pages they form extremely unhelpful and irrelevant in many cases, keyword stuffing has fallen into disuse.