Further Ping Integration in iTunes 10.0.1
Previously, there was a hidden setting that allowed you to reverse the behavior, so the default action was to show the item in your own library, and required holding [Option] to jump to the iTunes Store. If you changed that setting (as I did, since I use those arrows to navigate my own library far more often than linking to the iTunes Store), the behavior is actually still reversed in 10.0.1 (the default action shows the item in your own library), but the subheading in the menu displays the wrong thing; when it says “Show in iTunes Store”, you’ll actually be taken to your own library, and vice-versa.