Could we get the global microdata ( http://www.w3.org/TR/html5/microdata.html ) attributes, @itemscope, @itemid, @itemtype, @itemprop, and @itemref whitelisted, as well as allow meta tags ( http://www.w3.org/TR/html5/semantics.html#meta ), now allowable in the body of a document with HTML5, with @name and @content attributes (in addition to the global ones just mentioned available on all elements)?
The HTML5 spec even specifies a (Mediawiki) wiki for making official extensions (at http://wiki.whatwg.org/wiki/MetaExtensions ), so extensions could become "standard extensions" in convenient wiki fashion (while allowing @itemtype to indicate namespaced extensions), in cases where the Wikimedia community wished to reuse a particular meta property.
I should point out too that microdata is not only something which those using custom client-side jQuery or XQuery or one-off server-side parsers can take advantage of--it is already implemented by prominent crawlers such as Google: http://www.google.com/webmasters/tools/richsnippets (see also http://googlewebmastercentral.blogspot.com/2010/03/microdata-support-for-rich-snippets.html ).
Version: unspecified
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=63099