Can we make draw any useful insight from iTunes 'Listeners also bought...'?

...errm, well you know what I mean.

People who bought X also bought Y are all about the volume- I don't think that itunes has nearly enough scale to get good data yet. Also, to do those recs well, you'd want to really look at removing the effect of your top sellers. If everyone, for example, has bought Pet Sounds, then it will show as a rec on all the other music that those people bought. Which is probably not interesting recommendation data, beyond saying that many people like Pet Sounds.

Ha, when you pull up my band's CD, three "also boughts" come up:

The Little Mermaid Soundtrack
X&Y
Aerosmith - Gold

I'm going to hope this isn't an accurate sampling of our audience.