I've been listening to Pandora for a few months now and I'm still loving it.
It has it's quirks though. It's excellent at finding music similar to most bands and artists, but it sucks at finding music similar to specific songs. Also.. It has no idea what music is similar to Weird Al
oh, another funny little thing, If a song appears on multiple albums it'll play one version of the song and if you give it a thumbs down it'll start playing a different version of the song. I had James Gang - Walk away playing about every 20 minutes on one of my stations. It's a decent song but I can only take so much.. Anyway I gave it a thumbs down and the very next song it played Joe Walsh - Walk away! So I gave it a thumbs down.. about an hour later it played Joe Walsh - Walk away from his Best of album.. grr!