It seems like some GLAM institutions are starting to use URLs to Wikipedia articles as common identifiers for classes of items in collections. I guess this will change over time to be URLs to Wikidata instead. This is pretty much as expected, but it is although a bit strange that they are using Wikipedia and that no-one seems to have noticed this from our side.
Is there anyone that know how common this is? Så far I have only heard about a few of them, and I'm not even sure they have any clear understanding why they do it..
John / jeblad