The latest revision of terms for the iTunes Store may point to a missing feature, observers remark. "We have changed the iTunes Store Terms and Conditions to provide you notice that if you have opted in to the Ping social network and use the new Ping Sidebar," the text reads, "iTunes will send information to Apple about the content you select in your iTunes library in order to provide you with Ping personal recommendations." There is no identifiable sidebar for Ping, whether in iTunes 10 or iOS.
