I think Last.fm wants to be for music what LibraryThing is for books. Because it’s track and playcount focused, it’s a different experience. But I think if it could give me a similarity list for the contents of my library, it would probably turn up my Seattle friend Tom Harpel, on the basis of his recent Favorite Records list. Thanks for the listening suggestions—I’ll have to check the thirteen albums on the list that aren’t already in my library.