This presentation by Mikael Hindsberg (Yle) gives a short introduction to the Wikidata project. For tagging purposes it has proven very useful. It provides Yle with a multilingual, crowdsourced event, person and topic source with normalized naming and permanent identifiers. Wikidata has also increasingly developed into something of a Rosettas stone for different name space standards. Yle has for example put our Programmes Api ID:s into Wikidata.