Now that the backend is still iffy but generates a blog, I finally started showing some love to the UI.
Here's the brand new post editor:
The far-right two buttons should let you choose your flickr photo/openomy file respectively and add the link/thumbnail easily (the UI is not done yet).
The format to write is Restructured Text or HTML (non wysiwyg) but other things like Textile or wiki markup should be easy to add.
The main window uses a Qt model to create the tree with views (right now) by date, but with alternative organizations soon.