Distraction free writing. Except you do it in the biggest distraction on your computer - the browser: where burning an hour like it's nothing is just a Ctrl + T away!
Yeah, I've got to be honest -- the name of the app is pretty counterintuitive. I couldn't understand how it was distraction-free. I kept switching tabs to see if it would punish me for distracting myself or something, but it didn't seem to have anything to do with being distraction-free at all. It's not until I read some of the comments that I realized it meant "distraction-free from editor UI & markup".