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A Link Farm[3] represents a cluster of websites that all interlink with one another with the primary goal of improving their Optimisation des moteurs de recherche[1] (SEO) ranking. Originating in 1999 by SEOs, these farms were created to exploit the use of search engine[2] algorithms, specifically the Inktomi search engine that used link popularity as a ranking method. Link farms not only helped stabilize listings for online businesses with few natural links, but they were also manipulated by unscrupulous webmasters to increase Google[5]’s PageRank[6]. However, link farms are often viewed by search engines as a form of spamdexing[4], and can be filtered out during the ranking process. Despite this, they continue to be used in various forms, such as Private Blog[7] Networks (PBNs), which are groups of blogs owned by the same entity aiming to promote external sites and boost search engine rankings.

Définitions des termes
1. Optimisation des moteurs de recherche ( Optimisation des moteurs de recherche ) L'optimisation des moteurs de recherche, communément appelée "SEO", est une stratégie de marketing numérique essentielle. Apparue au milieu des années 90, l'optimisation des moteurs de recherche consiste à améliorer les sites web pour qu'ils soient mieux classés dans les pages de résultats des moteurs de recherche. Ce processus est essentiel pour augmenter le trafic web et convertir les visiteurs en clients. Le référencement fait appel à diverses techniques, notamment la conception des pages, l'optimisation des mots clés et la mise à jour du contenu, afin d'améliorer la visibilité d'un site web. Il implique également l'utilisation d'outils permettant de surveiller et de s'adapter aux mises à jour des moteurs de recherche. Les pratiques de référencement vont des méthodes éthiques "chapeau blanc" aux techniques désapprouvées "chapeau noir", le "chapeau gris" se situant à mi-chemin entre les deux. Bien que le référencement ne convienne pas à tous les sites web, son efficacité dans les campagnes de marketing en ligne ne doit pas être sous-estimée. Les tendances récentes du secteur, telles que l'utilisation du web mobile dépassant celle des ordinateurs de bureau, mettent en évidence l'évolution du paysage du référencement.
2. search engine. A search engine is a vital tool that functions as part of a distributed computing system. It's a software system that responds to user queries by providing a list of hyperlinks, summaries, and images. It utilizes a complex indexing system, which is continuously updated by web crawlers that mine data from web servers. Some content, however, remains inaccessible to these crawlers. The speed and efficiency of a search engine are highly dependent on its indexing system. Users interact with search engines via a web browser or app, inputting queries and receiving suggestions as they type. The results may be filtered to specific types, and the system can be accessed on various devices. This tool is significant as it allows users to navigate the vast web, find relevant content, and efficiently retrieve information.
Ferme de liens (Wikipedia)

On the World Wide Web, a link farm is any group of sites web that all hyperlink to other sites in the group for the purpose of increasing RÉFÉRENCEMENT rankings. In graph theoretic terms, a link farm is a clique. Although some link farms can be created by hand, most are created through automated programs and services. A link farm is a form of spamming the index of a web search engine (sometimes called spamdexing). Other link exchange systems are designed to allow individual websites to selectively exchange links with other relevant websites, and are not considered a form of spamdexing.

A diagram of a link farm. Each circle represents a website, and each arrow represents a pair of hyperlinks between two websites.

Search engines require ways to confirm page relevancy. A known method is to examine for one-way links coming directly from relevant websites. The process of building links should not be confused with being listed on link farms, as the latter requires reciprocal return links, which often renders the overall backlink advantage useless. This is due to oscillation, causing confusion over which is the vendor site and which is the promoting site.

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