You relate song/lyrics to what the characters would say.
You feel tally's depression over the death of zane every morning.(i like david better though. But still.)
You get these dreams about the books.
You hear cutter And start freaking out.
You basically get paranoid to every sound or thing that reminds you of the books.
And of course, You check out this scott westerfeld page every chance you get, in hopes of discovering something new about uglies, and to your dismay only find things about leviathon, a book you cannot get from your local library, unfortunatley. -__-