[drdaeman]

> it's transformative use of ... what exactly? Copyrighted works?

Yes. Among other stuff, but non-copyrighted stuff is not exactly an issue so it can be left out of our focus most of the time.

> I think the law is pretty clear on what happens on transformative use of copyrighted works.

Ah, if only - it's not. You could be mixing it up with concept of derived work - that's where the law is pretty clear (I think). AFAIK (IANAL), transformativeness is merely a suggestive factor for fair use consideration, and then it's all "whatever court decides" with a bunch of guidelines and precedents.