I'd be interested in running my own single-user version, but I'm sure there'll be a clone by the weekend (if there isn't I'll probably hack one up at my next opportunity).
I'm still working out the problems and polishing the interactions. When they're all ironed out, I'll open it to the public.
Thank you for making something like this a reality - I had a blank-page type editor a while back but didn't have the chops to make it actually usable at the time (hence my interest in recreating this).