OpenGraph or Schema.org?

Question

Just wondering whether you guys out there are favouring the OpenGraph protocol following markup like:

Answer 1

We are talking about two separate concepts here: syntax and vocabulary.

The Open Graph Protocol and Schema.org are vocabularies. Other vocabularies are, for example, Dublin Core, FOAF, and SIOC.

These vocabularies are typically not coupled to a specific syntax. If you want to describe your content in HTML documents with such a vocabulary, you could use the syntaxes RDFa and/or Microdata.

Which one should I integrate as I think only 1 is necessary ? [actually can you only integrate one or ?]

Your first example uses Open Graph Protocol (= vocabulary) with RDFa (= syntax). Your second example uses Schema.org (= vocabulary) with Microdata (= syntax).

You can mix them up as you like. (You could use both vocabularies with both syntaxes on the same page. You could use both vocabularies with only one syntax. You could use only one vocabulary with both syntaxes, or with only one syntax. …). It totally depends on your specific use case.

What do you want to achieve? If you are interested in a specific 3rd party parsing your content, you should check their documentation. They typically support only certain vocabularies with certain syntaxes.

But if you want to mark up your content with semantic metadata without having a specific use case in mind, you could stick to one syntax and use whichever vocabularies are appropriate for your content. Personally, I’d choose RDFa (Lite). It is based on RDF, which works with other formats than HTML, too. It is a W3C Recommendation (Microdata is not). And most vocabularies you’ll find are defined in RDF(S). See my answer about the future of RDFa and Microdata.