A link farm is a network of websites that exist solely for the purpose of artificially increasing the number of links pointing to a specific website. These links are often low-quality and irrelevant, and are created in large quantities in an attempt to manipulate search engine rankings. Link farms are considered a form of spam and can result in penalties from search engines. They are typically created by unscrupulous individuals or companies looking to boost their own website’s visibility, rather than providing valuable and relevant content for users. As search engines become more sophisticated, link farms are becoming less effective and are generally frowned upon in the world of SEO.