Hi We used W3c markup validator to validate documents contains OpenGraph data A lot of these documents are buggy and not valid We found that W3c markup validator is not complaining when: OpenGraph properties into <META> tags use a wrong attribute. They use name instead of property Here is an url example of such document http://www.imdb.com/title/tt0499549/ To validate it we force XHtml+RDFa doctype The namespace is declared <html xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml"> and there are a few meta tags declared in such way <meta name="og:title" content="Avatar (2009)" /> <meta name="og:site_name" content="IMDb" /> but there is no message indicates that there is something wrong with this meta tags To help reproduce this issue I can provide the current source of this document if required Thanks SzymonReceived on Wednesday, 5 May 2010 13:12:41 UTC
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