"Because, as Apple knows very well, most people fill their iTunes collection with music they acquire from every source but the iTunes store. […] You could go out of your way to tell Ping about what you do with your iTunes collection….[I]f you don’t make the effort, Ping will know next to nothing about you, because Apple has blindfolded the service. Another metaphor, via Debcha on Twitter: “Basing my musical tastes on my iTunes downloads is like judging my eating habits by what I buy at highway rest stops."

Peter Kafka, “Ping averts its gaze: Apple’s new social network doesn’t really want to know much about you,” at All Things Digital.

A little weirded out that my offhand remark to Jason Herskowitz wound up in this article…