microformats

microformats, rdf or microdata

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*Edit, May 2015: Times have changed… again. Schema.org seems the way to go, using either microdata (W3C note) or RDFa (W3C recommendation), where the RDFa Lite variant is easiest to learn. Meanwhile recently Microformats released a new version as well, which nobody is paying attention to currently. Also see the answer to What is the … Read more

What rel=profile is for?

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In HTML 4.01, there is the profile attribute for the head element: This attribute specifies the location of one or more meta data profiles, separated by white space. For future extensions, user agents should consider the value to be a list even though this specification only considers the first URI to be significant. It is … Read more