I love getting this email update from Last FM every week or so (it hasn’t come in a few months until today, so I don’t know if it will be as frequent in the future) because it tells me what is popular by what people are listening to rather than what they are buying. I think this is a way more meaningful metric than what people buy because people buy a lot of music they don’t listen to and if you don’t listen to it you won’t buy it again. And that is the primary goal of the music industry right? To make as much money off selling you cds over and over again right? Anyway, this is a few weeks old now, but still interesting.