You might be interested in a new way to create websites I'm creating. Websites are stored as JSON, and a small Javascript engine file writes these directly to the DOM.
This makes the site very easy to dynamically modify and save, which is the basis for this as a hosting service - the site itself contains a site editor that outputs the site as JSON, and uploads itself to S3.
(It's in late alpha, and will hopefully move to beta before the end of the month.)