In Ubuntu 9.10 or Sabily 9.10, your can sign in to Ubuntu One service from an Application menu. This is new feature because it don't have in Ver 9.04. To use Ubuntu One, you must have Launchpad Account. You can create new if you don't have it. By using Ubuntu One, you will have 2 GB online free storage and for $10 a month you can get 50 GB storage. You can share your file with other Ubuntu One user or you can keep it safe. This service only available in Ubuntu 9.10 and Sabily 9.10. Go to Ubuntu One homepage.