Thanks.
No the import of notes is not what I had in mind :-)
I always want to be storing files locally, or on a network share. Having this being intended as a collaboration tool makes sense, but if I'm the sole user, then it's just another place to store my files, which can't be shared or accessed by any other tool. That's my objection, and why I question the usefulness of something like this. You're siloing of data, which makes no sense to me (well it doesn't, it's the only way this can really work in the browser).
My question about the usefulness is sincere. I truly don't get why anyone would want to work in the browser like this, but I also dislike Google Docs. I'm just not the target audience, so I struggle to see how or why something like this would be useful.
The functionality is really well done, I'd just wish it was a desktop application, and stored files on my hard drive.