I'm aware this is always a contentious issue, so I'm seeking guidance.
I've just answered this question: A man finds some wrapping paper and gives it as a present to his daughter
After reading some guidance on the Stack sites, I chose against linking to a YouTube video I found. This was particularly because I found two videos, one of which was blocked by Warner Bros for copyright reasons. However, rather than linking to the second video I told the OP to simply google "Gift of Gold.avi". If he does that, the video in question is the first response.
Is that kind of linking acceptable? Or is anything of that nature deemed inappropriate?