I used to use tomboy wiki and they allowed you to bind opening a new note to a keyboard combination.
I use emacs on Lion and I want replicate this behaviour. I want to visit a new/existing file in my projects folder named yyyymmdd.md by pressing shift-z-command anywhere.
It might be possible to use automator to run a shell script that gets the iso date and then appends the directory path and
.md at the end. Then it calls emacs with those arguments. As a service I can assign it to a keyboard combination. But I have no idea how to complete the steps exactly.