i've always thought dropbox should play more on its strengths as a technology layer. When I think of a successful dropbox I think of all my critical application

i've always thought dropbox should play more on its strengths as a technology layer. When I think of a successful dropbox I think of all my critical applications having a logo in their startup banner saying "powered by dropbox" proudly displaying the dropbox logo. But thats where it could end. Why do I need to have a dropbox account? Why do I care about a quota? Can't the application just take care of all of that behind the scenes? All of things that make dropbox great could be built within the context of that application (sharing with other users of that application, live syncing with collaborators of that application). You could optionally sign up for a dropbox account which would just allow binding an app's dropbox-powered datastore to your global id (with permission from the app).