rel-nofollow-fr

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rel="nofollow"

Spécification 10-01-2005

Editeurs

Concept

Copyright

This specification is (C) 2005-2024 by the authors. However, the authors intend to submit (or already have submitted, see details in the spec) this specification to a standards body with a liberal copyright/licensing policy such as the GMPG, IETF, and/or W3C. Anyone wishing to contribute should read their copyright principles, policies and licenses (e.g. the GMPG Principles) and agree to them, including licensing of all contributions under all required licenses (e.g. CC-by 1.0 and later), before contributing.

Patents

This specification is subject to a royalty free patent policy, e.g. per the W3C Patent Policy, and IETF RFC3667 & RFC3668.

Abstract

RelNoFollow est un microformat élémental, l'un des nombreux standards ouverts microformats. En ajoutant rel="nofollow" à un hyperlien, une page indique que la destination de cet hyperlien NE DEVRAIT PAS ETRE chargée de quelque poids supplémentaire ou de classement par les agents utilisateur qui exécutent de l'analyse de lien sur les pages web (par ex. les moteurs de recherche). Les cas typiques d'usages couvrent les liens créés par les commentateurs tiers sur les blogs ou les visiteurs non identifiés sur les wikis, ou les liens wishes to point to, but avoid endorsing. For more specific endorsement (or lack thereof) semantics, see VoteLinks.

Profil XMDP

<dl class="profile">
 <dt id="rel">rel</dt>
 <dd><p>
   <a rel="help" href="http://www.w3.org/TR/html401/struct/links.html#adef-rel">
     Définition HTML4 de l'attribut 'rel'.</a>  
   Voilà une valeur supplémentaire.</p>
  <dl>
   <dt id="nofollow">nofollow</dt>
   <dd>- Indique que la ressource pointée n'était pas nécessairement liée
       par l'auteur de la page, et par conséquent dit que la référence ne devrait pas induire 
       à la ressource pointée quelque poids supplémentaire ou classement par les agents utilisateur. 
       - Indicates that the referred resource was not necessarily linked to 
       by the author of the page, and thus said reference should not afford 
       the referred resource any additional weight or ranking by user agents</dd>
  </dl>
 </dd>
</dl>

Références nomatives

Références "informative"

  • VoteLinks peut être utilisé par un auteur pour déclarer explicitement son support pour ou contre, ou la neutralité envers la destination d'un lien. Les "impémenteurs" mettant en oeuvre rel="nofollow" et les VoteLinks devraient de la même façon ne pas permettre quelque poids supplémentaire ou classement pour les liens qui soit sont rev="vote-abstain" ou rev="vote-against".
  • Contribution extraite de http://developers.technorati.com/wiki/RelNoFollow

open issues

These are open issues that have been raised about rel="nofollow" that have been raised in various forums, in particular, on the public W3C www-html mailing list. They have been grouped into four areas.

  • Definition. nofollow indicates a behavior rather than a relationship from which the behavior should be inferred as appropriate for the useragent. rel values should be nouns that indicates what the resource being referenced is in relation to the source.
  • Name. nofollow is a bad name.
    • overloading. does not mean the same as robots exclusion standards (robots.txt, meta robots) nofollow.
    • does not mean what it says. does not mean "do not follow this link", rather it means " do not add weight from this link". Asbjørn Ulsberg
    • not a noun. see above.
    • suggested alternatives:
  • Efficacy. nofollow will not affect spamming behavior.
  • Collateral Damage. If tools automatically add nofollow to all 3rd party links, then many legitimate non-spam links will be ignored or given reduced weight, and thus the destination of such links will be unfortunate casualties.

additional lists of issues

Additional lists of issues raised against rel="nofollow" can be found at the following site(s):

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