@grishka

;)
In Germany it changes time by time:
Prior to 2006 you would have written an addressing-“du” as “Du” – that felt half formal …

/ overflew de.json and looks very fine, just one questionable:

“hat auf deine Pinnwand geposted”

here 'auf' means the 'directly on the surface' and you can use it. But the meaning is more if you use a permanent pen for the pinboard (which would be rude), if you'd stick a post-it,
would be
“hat an deine Pinnwand geposted”