The fixture list is a whole different animal to youtube clips, though, because posting fixtures is violating copyright and stuff because this forum doesn't have the license for it.
However, posting videos that this site does not host nor makes the claim that it owns shouldn't be prohibited. I realise nothing's going to change but the point should still be made that there's no reason that posting clips should be illegal unless the copyright owners insist that it does, and if they do, they'll be taking that up with youtube and not N-O.