Why not use aerofs.com? I mean thats the goal, server-less dropbox. The server is just a communication means, it does not store anything unless you ask it to.
At some point convenience trumps oss. Ask for an invite, you will get one fairly fast. Unlike dropbox it actually works when I need it (new computer) vs dropbox which coughs blood when I need it, and works fine when I don't [dropbox initial dl speed is 0.01kbps for a few hrs, aerofs caps out my bandwidth].
> Ask for an invite, you will get one fairly fast.