Open Graph

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http://www.evolution-emarketing.fr/emarketing_ecommerce/2010/09/opengraph-facebook-contenus-personnalises.html Encore une fois, ce n’est pas une hirondelle mais une nouvelle fonctionnalité Facebook qui a fait et marqué le printemps 2010. En avril 2010 Facebook a lancé Opengraph. Plus qu’une fonctionnalité, Opengraph est une plateforme qui permet à des sites ou applications mobiles d’obtenir instantanément des informations comportementales au sujet de tout visiteur internaute abonné Facebook.

e-marketing & e-commerce: Opengraph : omniprésence de Facebook sur des sites tiers et publicité comportementale

http://www.reviewsforjoomla.com/forum/index.php?topic=11093.0

facebook Open Graph deep integration into jReviews - Joomla Review Site Component

Many words for a clear explanation but you can put that into your site in 2 steps. This topic is being discussed here: http://www.reviewsforjoomla.com/forum/index.php?topic=9884.15 3.
http://developers.facebook.com/docs/opengraph/

Open Graph protocol - Développeurs de Facebook

At Facebook's core is the social graph; people and the connections they have to everything they care about. Historically, Facebook has managed this graph and has expanded it over time as we launch new products (photos, places, etc.). In 2010, we introduced an early version of Open Graph, an extension of the social graph, via the Open Graph protocol , to include 3rd party web sites and pages that people liked throughout the web. We are now extending the Open Graph to include arbitrary actions and objects created by 3rd party apps and enabling these apps to integrate deeply into the Facebook experience. After a user adds your app to their Timeline, app specific actions are shared on Facebook via the Open Graph.