A nofollow link, also known as a backlink, is a hyperlink that has been tagged with a special HTML attribute that instructs search engines not to follow the link. This means that the link will not be counted towards the target website’s search engine ranking. Nofollow links are often used to prevent spam and to indicate that the linked website is not endorsed by the source website. They are also commonly used in sponsored content and user-generated content to comply with search engine guidelines. While nofollow links may not directly impact a website’s SEO, they can still drive traffic and increase brand visibility.