Keyword poison refers to the detrimental effect of using certain keywords or phrases in online content that can negatively impact a website’s search engine ranking. These keywords are often overused or irrelevant to the content, causing search engines to view the website as spammy or low-quality. This can result in a decrease in organic traffic and hinder the website’s visibility to potential visitors. To avoid keyword poison, it is important to use relevant and natural keywords in moderation, focusing on creating high-quality and valuable content for both search engines and users.