link farms are web pages that either have many links to crap or links to other links to other links. Link farms are a passive form of spam, and usually contain a search phrase that you've entered into a search engine but have no actual content.
by Sly_Foot March 10, 2006
A website with web pages that are either full of links to junk, or full of links to other links to other links. Link farms contain links for popular search engine terms from search engines, such as "free games" or "free ebooks" and include these search terms in their link text. However, the page never has any actual content relevant to the search term. A link farm is a more passive form of email spam, but uses junk web pages instead of junk email.
... carrying out research on behalf of the New York Times, set out to discover when the retailer had managed to hold top spot in the rankings for almost every product-related search term going. He discovered that taking one product area alone, dresses, he was able to find more than 2,000 sites that include a reference to a dress, with that reference being a text link to {company name removed}. The majority of the sites had nothing to do with dresses, had little content, and frankly were blatantly nothing but link farms.
by Nigel Nquande February 17, 2011