Playing with ZumoDrive and already like it. I think this is going to be HUGE, provided two things happen:
1. The clients become less buggy. They have a very alpha/beta feel to them; Mac client random crashes, can't remove dock icon, etc.
2. Linux support is added. You know most of those netbooks you speak of are running linux now, right? ;)
Good luck gentlemen, I will be keeping an eye on this one...