English: Explanation of why Wikidata and Wikimedia are part of the KB's strategy to make historical image collections visible, findable and reusable, and what criteria the KB uses to determine which collections are suitable for Wikification This presentation was part of the Wikidata panel Why use Wikidata, or not? - LIBER 50th annual conference, 24th June 2021. In this panel session we seek to bring together speakers who have done research on or implemented Wikidata for library collections to discuss the advantages and disadvantages of sharing these information via the Wikimedia ecosystem and Wikidata specifically. . The presentations will include the reasons for the use of Wikidata or not, as well as practical examples from three libraries implementing Wikidata each in different stages. Following these short presentations there will be an opportunity for attendees to ask questions to facilitate a larger discussion on the growing knowledge around the use of linked data and specifically Wikidata in libraries. See also LIBER 2021 - Panel Discussion: Why use Wikidata or not