And that's exactly what I'm working on right now. It won't quite be an etherpad because doing constant diff is not a trivial thing... but bi-directional "live"

And that's exactly what I'm working on right now. It won't quite be an etherpad because doing constant diff is not a trivial thing... but bi-directional "live" editing session over the web will be possible. I am a couple of weeks away from having something.