Tonight the long-waited bubble arrived:
Now a can really start to safely put all my docs in the cloud (and not only docs, by the way).
Only one thing concerning the interface. For those like me that purchased additional storage, GMail and Picasa have at the bottom of the page an indicator bar, like these ones:
GMail's storage quota bar
Picasa's storage quota bar
Google Docs hasn’t it yet. Hope they’ll soon unify the interfaces.
UPDATE: seems to be impossible to give the uploader a certain directory and have it to recreate the folder structure recursively. In other words, it’s only possible to upload nothing but files. Really really annoying, you have first to manually create the folders you need. I’m gonna rise my voice with the team.