HTML code that designates a set of the main keywords and terms that are relevant to the page's content. Search engines sometimes use these keyword meta tags to determine page rank. There has been a lot of abuse by Web sites in the past resulting in search engines reducing the significance of keyword relevance. It's still an important factor when optimizing. Example: meta name="keywords" content="web site promotion services,website promotion company,seo,search engine optimization,online marketing,specialized marketing,internet marketing,morepro marketing inc"