Pandora is a great service. I really like it. I’ve discovered new music and found songs I used to listen time ago, when I had time to rip my cds to mp3 and to maintain a huge music collections.
So I love pandora, but..
They provide an online flash player (to serve visual ads, I guess)
With 64bit Linux (with official Adobe player), the result is like opening my laptop and grabbing half of my RAM. And underclocking my CPU. And heating everything else.