About the running onstge thing: I think that everybody should behave onstge as he feels because the audience understands whether you are faking all those funny movements and faces or not. Also I think that the sight of a band in which everybody is standing stiff and looking at their left hand, is somewhat boring. I personally cant help myself from moving and enjoying the music, although when I see the outcome on video I often would say"hmm, maybe I look as a dumbass here :D " but then I realize that I don't give a damn beacause it was all a natural reaction, not something I did in order to look like a kool rockstar or whatever.
The world is loaded, it's lit to pop, nobody is gonna stop!