If we link from OSM as a international project to a Wikipedia article there is the problem, that we cannot link everybody to the article of his native language. In order to overcome this problem I had the idea to use the new Wikidata project. The first project of Wikidata is to collect all associated Wikipedia articles of different languages in a machine-readable format.
In example you will find the object with the ID “1” here:
There you can find all available “translations” of the english article “Universe”
My idea was to use these Wikidata objects to link everybody to the Wikipedia article of his browser language. For the “Universe” article this should be done by clicking this:
For other Wikidata objects / Wikipedia articles you can replace the “1” by another number. How to find a number? Choose a Wikipedia article and scroll down. At its left side below the languages you will find a link to the associated Wikidata object. Click it and take the number from the adressbar after the “Q”. The Wikidata interlanguage link is implemented in all 280 Wikipedia languages.
Replace the “1” by the number found above and paste it into your adressbar.
Now you should see the Wikipedia article in the language of your browser. Please report here which browsers and which language you have tried.
Of course this “Native Wikipedia link” -feature could not only be used by OSM. As far as I know this is the first application of Wikidata for use outside of Wikipedia.