Manual:Nofollow/fr

Nofollow (ne pas suivre) est une valeur assignable à l'attribut rel d'un élément HTML pour indiquer aux moteurs de recherche qu'un hyperlien ne doit pas influencer le classement du lien cible dans l'index du moteur de recherche. Le paramètre de configuration est utilisé pour contrôler si un lien externe de wiki doit avoir nofollow ou pas.

Bénéfices
The main benefit cited for using nofollow is that it deters spam. Mainly this benefit applies to pages where spam could be overlooked and therefore not be reverted. Nofollow mostly deters spammers who are sophisticated enough to know about nofollow but either not sophisticated enough to realize they can still get a return on their investment even with nofollow in place or aiming for higher returns on investment. Nofollow unfortunately does not deter spammers if their motivation is to attract visitors to product pages rather than to boost pagerank, if your wiki is very popular. Another cited benefit of nofollow is that driving pagerank to linked sites can be harmful to those sites or to the article subject; this, however, does not specify whether said harm is beneficial or harmful to the reader, who may find even (or especially) derogatory information useful, e.g. if it helps him avoid a shoddy product.

Coûts
Using nofollow will prevent a wiki's links to other sites from boosting those sites' search engine pagerank, which is bad if the wiki owner wanted to boost their pagerank. Turning off nofollow is especially a good idea if you run a (i.e. one that does not allow editing by anonymous users, and that allows registration by invitation only). In such a case, spamming is not a concern because the spammers lack access to edit. Some public wikis also avoid using nofollow because they want to encourage people to make useful contributions that add external links to their favorite sites. Another cost of nofollow is that there is not yet much capability for using it selectively; it has been argued, "Can you imagine a web that works as good as today's if every link was tagged with nofollow?"

Voir aussi

 * Alternatives to applying the same nofollow/dofollow value to all external links
 * The dofollow FAQ
 * Manual:Combating_spam

Lien externe

 * No to Rel="Nofollow", NoNofollow.net