When I came across the Ghost while reading HN I really liked it, and have thought about making something similar, but have never gotten around to it. In the last few days though I have put it together just as John described (I don’t know if its legal or morally right to publish it, but I will blog about it at least because I have spent some time on it.
I finished working on the fifth image down in his post, -the post list and preview- I also finished the sixth image, which is the editor with markdown, and preview.
Now I am working on the backend which is created with PHP and the Slim PHP RESTful application framework. If you would like to check out the current version of my rendering of Ghost, you can see it on GitHub by following the link. My Live preview Markdown editor can be found here