On Mon, Jun 9, 2014 at 6:09 PM, Gregg Kellogg <gregg@greggkellogg.net> wrote: > > Of course, anyone may interpret Microdata however they find useful; it > would be nice to get some definitive interpretation from schema.org > partners, but they've (collectively) never been forthcoming on what the > real semantics of schema.org. > "For a large case of classes, the meaning of a schema.org term is its use in the language. And the meaning of itemid is sometimes explained by pointing at a bear <http://wikiality.wikia.com/Bears>." I don't think that it safe is in general to use itemid (or itemprop etc) except with an absolute url , since the base of a relative name may be affected by redirects. (It is possible that urn:isbn:978-867-5-309-X might pass as an itemid, though only itemtypes are protected against being automatically dereferenced).
Received on Monday, 9 June 2014 23:55:37 UTC