shared books

Does anyone know why the shared books hasn't updated? I know that I have the same books as other people on this list, but they aren't showing up.

sometimes it depends on what version of the book you have as to whether the system realizes that others have it. You can do a "search other's libraries" search for a given book, then click on the book, then go to the bottom and see if you are listed as a "list people who own this book" and if you are not there, you can click to "add this book" on the book's page and then delete your mysterious unassimilated copy. But that's a pain, alas.

The group's shared books are listed correctly in the Group Zeitgeist page, but not on the group homepage.

I'm only about 10% through adding books. I'm sure others are in much the same boat.