Sadly it looks like Pandora will not be embracing social networks beyond Twitter, Facebook or email anytime soon.
“‘Social networks don’t matter as much,’ Conrad told me. Instead, he wants to focus on the social interactions each of us have every day while listening to music in the same physical space. Sure, Pandora also offers options to share music on Twitter and Facebook, but Conrad said that only a small percentage of listeners make use of these features. (via GigaOm)”
I’m currently experimenting with Last.fm, which is slightly “rougher” than Pandora (as Last.fm’s UI and music recommendations are not as refined).
I’m still paying for both services (or at least I will be for Pandora until September), but for now it looks like I’ll be using Last.fm as my default radio service.