The new Google Page Speed Service will take data from your website, optimize it for speed, then serve to users from their servers all over the planet. Your website still exists where it is, but you point the DNS to Google. So, Google is the only site that actually reads your site and anyone else gets it from Google servers, which are worldwide, plus they optimize the code before sending it along. This promises faster speeds for your website loading, and you can test it now.
It’s not free. However, they say prices will be “competitive.” In effect, it’s a worldwide content delivery network for websites that also optimizes the pages.