Amber and I agree on many things, but I'm not sure I agree with her call to integrate genre fiction in with the general literature population in libraries. It's entirely possible that I'm wrong, but I don't think of it as ghettoization. Rather, when it comes to genre fiction, I'm a separatist. I tend to think the genres are so awesome that they can stand on their own. Foundation doesn't have to be in the literature "A"s along with Austen to awesome. Sam Spade, Philip Marlowe and Sherlock Holmes had plenty of customers even though they stuck to their offices and lodgings on the page: they don't need to go out and rub shoulders with novels who think they're gumshoes' betters today. I realize I'm being particular and contrary. I just remember many very happy hours curled up on the floor between the shelves at my local library, narcotized by Asimov and Robinson. Those separate shelves were a refuge, a place where i could be alone and as greedy with the books as I wanted.
In reality, it's probably better to integrate the shelves, if only to increase the chances that less-directed/obsessive kids than me will find their way to science fiction, and mystery, and fantasy. The pleasure of stumbling into something that will upset your conceptions of what literature and art can be is immeasurably great. And it doesn't really matter how that happens, whether you stumble into the section as a whole, or happen to pluck an individual volume off a shelf.