I still don't get it. I would love to use Dropbox but I can't install it everywhere I go since the installation requires admin rights and I don't have them at the university's computer for example. But I can use SSH and therefore SCP from any computer without admin rights, so I really don't see what this does except eliminate the need for a shell account, which are practically free, heck even VPS's are beginning to be almost free nowadays.
I'm pretty sure you don't have to install Dropbox; the app is just using it as local storage 'in the cloud'. It'd be nice if there were an interface to swap it out for other things, like Microsoft, Google, EC2 or Rackspace storage.
