Selling links or backlinks refers to the practice of exchanging or purchasing hyperlinks from one website to another for the purpose of improving search engine rankings and driving traffic. This is often done in an attempt to manipulate search engine algorithms and artificially boost a website’s authority and visibility. However, this practice is considered unethical and can result in penalties from search engines. It is important for websites to focus on creating high-quality, organic backlinks rather than resorting to buying or selling them.