Looks interesting but an authoring tool is not something I want to run "in the cloud" and be dependant on a connection and a service that may or may not be there when I need it.
Wouldn't invest much time in a tool that is not available for download, to be honest.
If you don't mind me asking, what country are you from?
I ask because I find this strange, since here in the San Francisco bay area, I find it difficult to get 'away' from an internet connection. They're everywhere I go, whether I want it or not. I carry an internet connection on my smartphone and can tether to it whenever I need it. The only time I can't get an internet connection is when I'm in the middle of the woods, and that's just because I'm not paying for AT&T.
Having authoring tools "in the cloud" is the premise for many great services such as Google Apps, Microsoft Office apps, Facebook, Wordpress, etc... Being able to do something as cool as HTML5 authoring without having to invest hundreds of dollars in some Adobe product has great value to many... especially students or young poor people that want to learn and don't want to pirate software to do it.
Data plan is still relatively expensive in the U.S. $30 for 3GB from AT&T. Can you trust the security of free wifi hotspot? What if you want to do work on a bus or on a train ride? What if your home network is down? A lot of people work remotely from home and they rely on home connection. If this has localstorage and sync that'd be nice. Does it?
And this is why anyone sane who doesn't live there hates your smug filter bubble, and why Android is still a pain to use once you go out of signal range.
Eh, I live in independence, Missouri (Pop. 117,000) and I too, "can hardly get away from the internet". It would certainly be available anywhere I wanted to use something like this, e.g. home, coffee shop, library, co-working space, etc... I guess if I was at the park or on a plane, it wouldn't work.
there are two ways to address it. first of all we will add offline support at some point, so you can work offline and when you are online it will sync itself with the cloud.
another possibility we are considering is just to wrap it up into multiplatform desktop app which is technologically not is difficult to do these days.
Wouldn't invest much time in a tool that is not available for download, to be honest.
Nevertheless it looks well done.