Problems in books list

Some recent changes to the system put all my wanted books on "read" state. I think there should be four book states: read, unread, reading and wanted. Unread would be an owned book that you did not read yet.
Deleted user

Unread would be helpful for taggers as well. They could have a lot to add to the item page but maybe they don't own it or haven't read it. Either that or tagging becomes 123 easy undepending on what you own or have read, or both.