Their site makes it incredibly difficult to actually find out what this really is.
The only text visible on my screen when the page loads are the lines "Airborn OS", "Even if we get hacked, they can't read your documents" and "Collaborate in real time" which tells me essentially nothing about why I'm here, what this website is, or what you're trying to sell/advertise.
The only indication as to what this software actually does is in this Hacker News title.
For contrast, Google Doc's homepage[1], the first two things I see are "Create [persuasive/adjective] documents" followed by "With Google Docs, you can write, edit, and collaborate wherever you are. For free." This tells me basically everything I need to know, as a casual user, to understand what Google Docs is and why I might want to use it.
I hope this doesn't come across as overly critical, just some (hopefully helpful) feedback.