Pithos 1.2.0 was released today and it includes a new explicit content filter option, new dialog design, along with other improvements and important bug fixes.
Pithos is a Pandora Radio client that includes integrates tightly with the desktop, providing notifications, an Ubuntu AppIndicator, MPRIS v2 support (so it integrates with the Ubuntu Sound indicator, etc.), media keys and more.
The app supports Pandora features like thumbs up / thumbs down / tired of this song options, the ability to switch between Pandora stations, and editing and creating stations. On top of that, Pithos also provides proxy support and last.fm scrobbling.