What is the difference between a zine, and a self-published book? Is there a certain thickness at which point it can no longer be a zine, and can only be a book (and if so, where does a 111-page "zine" fall?) Do you still consider publications like Bitch and Bust to be zines, or have they become big enough that they're now magazines? How big does the publisher have to be to start counting as a real publisher, and take a zine from being a zine, into being a book? Are zines like women (they are zines pretty much because they say they are, with little to no other definition)?