Hello Rampagerabbit,
I'm really sorry that late reply to this,
First, for the Danish language still haven't update this 2 string yet
COM_EASYSOCIAL_SYSTEM_COMMENTS_INVOVLED_TITLE="%1s commented on an item that involves you."
COM_EASYSOCIAL_SYSTEM_COMMENTS_ITEM_SYSTEM_TITLE="%1s commented on your item."
So when you see this language string
COM_EASYSOCIAL_SYSTEM_COMMENTS that is not showing full language string from your notification page, that is because the language string already truncate from EasySocial, you can see my screenshot (
http://screencast.com/t/nNQQV1Vdku ) if your Danish language file already exists this 2 language string, so it also will truncate it like this example :
admin commented on your status: "arlexwong commented on your it..." (You can compare this with above COM_EASYSOCIAL_SYSTEM_COMMENTS_ITEM_SYSTEM_TITLE)
Hope this explanation help.
Also, thanks for sharing Alex