One of my future startup ideas is a digital whiteboard, similar to dabbleboard.com (featured here recently) that would allow you to do a quick web ui design ske

One of my future startup ideas is a digital whiteboard, similar to dabbleboard.com (featured here recently) that would allow you to do a quick web ui design sketch and output the html/css (or, as long as I'm dreaming, haml/sass) for further development.