Keyword stuffing is a black hat SEO technique that involves overloading webpages with excessive keywords or search terms in an attempt to manipulate search engine rankings. Keyword-stuffed content often reads unnatural, spammy, and irrelevant to users, detracting from user experience and search relevance. Search engines like Google penalize websites engaging in keyword stuffing by lowering their search rankings or removing them from search results. Pages with keyword-stuffed content may experience indexing issues, with search engines disregarding or penalizing such pages for violating webmaster guidelines. Webmasters should focus on creating high-quality, relevant content that incorporates keywords naturally and provides value to users rather than attempting to manipulate search rankings through keyword stuffing. To address keyword stuffing issues, webmasters should review website content for excessive keyword usage, rewrite or edit content to remove keyword stuffing, and focus on creating informative, engaging content that addresses user queries and search intent. They can also use tools like Google's Keyword Planner to identify relevant keywords and incorporate them organically into content.