Jesse (Pathoschild <pathoschild <at> gmail.com> writes:
If we simply extend MediaWiki to support metadata for
authors, the metadata is limited to these types and fields. Public
metadata can be extended and parsed in any way the local community or
our content users feel useful. Users can add their own metadata
(translators? publishers? work licenses?) to templates, and add their
own tools and databases to the collection.
the use you may need seems to be a lot like what Semantic MediaWiki is offering.
I don't know if Wikisource would consider it, but adding user-curated metadata
using a user-generated vocabulary, and being able to query it internally (as
well as exporting it externally) is pretty much what we do.
If you have any questions on it, feel free to contact me.