OpenGraph or Schema.org?

Question

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

Answer 1

All depends if you're trying to markup your website for a social world (facebook) or search engines. Both are recommended but if you only have time for one then prioritize the company's marketing focus. OGP is huge for facebook, but does not have an ounce of use in SEO. Seo is completely reliant on micro-data and is the way for proper html5 creation.

HTML5Doctor on Microdata http://html5doctor.com/microdata/

Google talking about markup: http://www.google.com/support/webmasters/bin/answer.py?answer=1211158

Bing talking about markup: http://onlinehelp.microsoft.com/en-us/bing/hh207238.aspx

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Update

For anyone finding this answer, a lot has changed since I first posted it. Schema.org is widely used by all major search engines and then some but the markup is now preferred to JSON-LD. Great article from SEO Skeptic outlining the change made by Google.

Google Structured Data provides documentation in JSON-LD and is greatly encouraged although RDFa and microdata is still partial supported.

JSON-LD should be used in conjunction with any social channels you are trying to target OGP for Facebook, Twitter Cards for Twitter, etc