Yes, of course! I know about it since I first read about sandbox.
In my spare time I write how broken web is. This is my hobby.
Ah okay, I didn't mean to belittle your work (I actually think it's quite great) I was just hoping you knew this wasn't exactly new material.
http://media.blackhat.com/bh-ad-11/Lundeen/bh-ad-11-Lundeen-...
These guys used html5 sandbox to break facebook's javascript frame breaker. Two years ago.