I'm not a front end developer, but it seems to me that pre-evaluation of javascript, or even compiling the js into byte code, would be something that front end developers would want to try in order to speed up their own users' experience of their site. Is there anything that the cloud part of Silk is doing that can be applied to websites in general, regardless of what browser is doing the rendering? Or is this optimization uniquely possible because Amazon controls the browser itself?