are there any paid subscriptions available for Ubuntu One?
What additional features does it have?
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Sign up to join this communityUbuntu One is an online file hosting service. It offers 2GB of space free with an option to upgrade to 50GB of storage for $10 a month.
With the Free Version you can:
Sync up to 2 GB of files, contacts, notes, bookmarks, purchased music, and Gwibber broadcast messages
Automatically sync your digital life to your personal cloud and with all of your computers Mobile Contacts Sync
Mark any directory in your home folder for sync
Share folders with trusted contacts or publish files to the Internet with convenient short URLs
Sync purchased songs from the Ubuntu One Music Store
Integrated with your Ubuntu computer
Convenient web browser access to your personal cloud
With the Paid Version you get:
50 GB total of storage to sync more of your digital life
Keep your address book updated when you're on the move with Mobile Contacts Sync
Mobile sync supports thousands of phones including smartphones like iPhone and Android
Synchronize your contacts with more applications (like Thunderbird) and operating systems (Windows and OS X)