SevenCubed - 2:41 pm on Nov 2, 2010 (gmt 0)
I would say it's a matter of your personal preference as to wether or not you want to allow those options. You are already obviously aware of the potential pitfalls.
As far as this...
do you "lose the benefit" of having a youtube video as far as Google SERP benefits
Don't allow yourself to be controlled by Google. Do what you think is best for yourself and your visitors.