I tried Pandora One last year. I played it in the horrible PS3 browser and sometimes it would freeze up but I ended up canceling Pandora One during my year because all I heard was the same tracks over again and they played too many live tracks especially from Phil Collins. I hate live tracks more than anything. I since switched to Slacker/AOL Radio where I don't hear as many of the same tracks and there are way less live tracks.
You are better with a iPod Touch anyway as eBay has deals on them. You can load the Pandora app or what I use the Slacker and AOL Radio app and you can connect it to your stereo with a dock. It will sound much better then playing it though the cruddy PS3 browser if it has not already froze your PS3 again.
Earthlink Extreme powered by Time Warner Cable Brooklyn.
ASUS RT-N66W Router 374.43 (Merlin Build) using OpenDNS.
Amazon Fire TV, Apple TV 3, Roku 3, Sony PS3 Slim, Sony PS4 all Wired.
Cats are the best pets.