Too bad I can't find it now. When I was beginning on this forum, there was somewhere a sticky thread about rules of uploading, containing a paragraph about copyright.
IIRC, there has been written something in this meaning:
1) You can't use in your mod something made by somebody else without his permission...
2) ...except of things from other games from Paradox Entertainment
I'm sure (well, just 99% :rofl: ) I read there that special exclusion about Paradox games.
However, whole the sticky prohibiting from uploading copyrighted things is now..... nowhere....