cool. but since Youtube has such a HUGE authority then 301 might not be even necessary correct?
I'll chime in here.
You do the 301 so YOU control the links. If your property (youtube, web 2.0, etc) goes down you just create a new one and change the 301 to the new prop.
Hitting a domain or property directly with a SGW which you don't control is full on retard in my opinion.