This is a message for everyone looking for a replacement to Ubuntu One or any other cloud services.
I have a found FireDrive, a cloud service offering 50 GB of storage for free!
Wow! very user-friendly and play MP3, watch videos edit documents on your web browser. Let's just say that Google Drive and it's 15GB, presented earlier as the best alternative, looks small beside it.
Go to ww.firedrive.com