Yeah, we're still working on a way to make this work better for the sort of ongoing web development that most HN readers probably spend a good amount of time doing, but we do think it is very useful for smaller sites that don't need parallel deployment of markup and style changes.

We're also releasing this very early, for a Fog Creek project, to see what people think. It might be that this becomes a desktop tool using something like Titanium, or we might try to integrated version control into it as an alternative to publishing. As such, we're open to suggestions and feedback.