Great work!!! and I love to say that in next few years this is going to change the coroporate world a lot.
For common user OS is at their door step to use from any of the screens like TV or mobile or any device which can host broswer .
Please keep posting the features which we think are most useful for any user which can be used on Broswer alone.
I see that
1. User login and authentication to specifically store his own personal data on OS.
2. Create documents and share with authenticated users by providing just url.
and lot more to be posted by other users.