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Microformats, RDFa et microdata

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Le Web Semantique maintenant: utiliser les Microformats, RDFa ou microdata maintenant dans le but de profiter des Rich Snippets de Google.

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Microformats, RDFa et microdata

  1. 1. Web of Data & SEO Samuel Lavoie / W3Québec / Consultant Web Marketing / @sammyQcphoto by balakov on flickr.com
  2. 2. Aujourd’hui• Web Sémantique ?• Outils• Exemples• Possibilités
  3. 3. “The Semantic Web provides a commonframework that allows data to be sharedand reused across application, enterprise,and community boundaries”
  4. 4. Fondements• Ressource Description Framework - RDF• Web Ontology Language - OWL• Friend of a friend - FOAF• http://www.w3.org/RDF/• http://www.w3.org/2004/OWL/• http://www.foaf-project.org/
  5. 5. Rich Snippets• Card• Recipe• Review• Event
  6. 6. Outils disponiblesphoto by cwt_ucla on Flickr
  7. 7. Microformats• Simple mais limités• Centré utilisateur• xHTML• Répandus
  8. 8. Microformats<a href="http://www.samuellavoie.com"rel="me">Samuel Lavoie Blog</a>
  9. 9. Microformats<a href="http://www.monblog.com"rel="nofollow">M. Spam SEO</a>
  10. 10. Microformats<div class="vcard">    <p>Name: <span class="fn">Samuel Lavoie</span></p>    <p>Title: <span class="title">SEO Consultant</span></p></div>
  11. 11. RDFa• Flexible• Extensible• Complexe• Version 1.1 compatible HTML4 et 5
  12. 12. RDFa<div xmlns:v="http://rdf.data-vocabulary.org/#" typeof="v:Person"> <p>Name: <span property="v:name">Samuel Lavoie</span></p> <p>Title: <span property="v:title">SEO Consultant</span></p></div>
  13. 13. Microdata• Spécification HTML5• Simple mais flexible• Peu répandus
  14. 14. Microdata<div itemscope itemtype="http://data-vocabulary.org/Person"> <p>Name: <span itemprop="name">Samuel Lavoie</span></p> <p>Title: <span itemprop="title">SEO Consultant</span></p></div>
  15. 15. Err... mais lequel ?• RDFa = complexe mais bien supporté• Microformats = populaire mais limités• Microdata = HTML5
  16. 16. Étapes• Créer le code ou le générer• Générateur de hCalendar• Générateur de hCard• Générateur de hReview• Intégrer dans les pages• Tester et soumettre à Google• http://www.google.com/webmasters/tools/richsnippets• http://www.google.com/support/webmasters/bin/request.py?contact_type=rich_snippets_feedback• Patienter
  17. 17. Rich Snippetsphoto by balakov on flickr.com
  18. 18. Conséquence• Crawler comprends l’information• Augmentation du CTR dans les SERPs• Verticaux Google (et autres)• Réutilisation de vos données
  19. 19. Pièges à éviter• Code non valide• Trop peu d’information• Cacher les données• Site vide ou peu pertinent
  20. 20. Conclusion• Microformats vs. RDFa vs. microdata• Recipes, Card, Reviews et Events• Rich Snippets dans les SERPs• Futurs Verticaux de Google• SEO Local
  21. 21. Ressources• RDFa.info• Microformats.org• Websemantique.org• Google.com/webmasters/tools/richsnippets
  22. 22. @sammyQcQ/Aphoto by balakov on flickr.com samuellavoie.com w3qc.org

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