I've actually read a couple blog posts by writers who do this. I plan to give it a whirl on a short story soon.

I think National Novel Writing Month is great for training yourself not to edit. There's a lot to write every day and usually not much time, for most of us. So just powering through is the main goal. I also use an app called Write or Die that strongly encourages keeping the writing going, rather than going back and reading/editing.

Thanks for your comment! :)