This is my first visit to Web Applications, although I've been using the other SE sites for some time.
I left some comments on this question.
It kind of escalated. Did I overreact and overstep the mark?
Perhaps a bit, yes, but thank you for raising the issue on meta.
See this related Super User answer
TL;DR -- we always assume fair use unless there is clear and compelling evidence of illegal or dangerous intentions.
I think this is a perfectly valid and useful WebApps question for someone who wanted to move all their YouTube videos -- whether they are of their dog, or of The Black Eyed Peas -- to another video hosting site for whatever reason.