On the World Wide Web, a link farm is a large group of web pages created that contain hyperlinks to one another or a specific other page. Link farms are normally created by programs, rather than by human beings.
The main purpose of a link farm is to deceive the indexing programs of Internet search engines that assign rankings according to the number of pages that link to a specific page. If the link farm works as planned, the search engine will believe that the promoted page is hugely popular because of all the pages that link to it and give it a high ranking. Search engine operators consider link farms an abuse and attempt to detect them, to remove them from their indices or penalize their content rank. Free For All link pages are a particular type of link farm.