Yes, I'm far more interested in Silk. It's a caching layer over the entire web. That is nuts. I'd love to know more about the internals of it. Do they only grab static files or is their some dynamic content caching? What's the threshold of requests before moving a page/site into Silk? Is there a way to opt out of using it if you have privacy concerns (sending every one of your requests through their system first will be a big issue for a lot of people). This may not seem that groundbreaking since Opera has already done this, but Amazon seem to be doing it on a much grander scale.