Linked data formats (like RDF) work well for mass editing.
Multiple ways of describing items (data models, ontologies, hierarchies) can exist within the same system (even conflicting values!).
Linked data can be edited, queried, and updated quickly.
By virtue of linking, more relevant resources will be more visible/easily discoverable to users.
The more information there is associated with an item, the easier it is for users to pivot to related concepts, associated images, or similar items in a click.