Librarians: I'm sure it works differently in different locations, but if a book I am interested in has 78 holds on two copies, if I add myself to that long queue, will the library be more likely to purchase an additional copy? Or is the number of holds largely irrelevant? I can just wait for the queue to die down.
@butterscotch HOLY SHIT.
I have never seen that many people in line.
Also, one of my libraries allows you to put a newer book on hold, and the other has no holds allowed on any book less than a year old. That means you have to stalk the New Arrivals shelf in person, and wait for them to restock to see if the book you want has been returned.
Kim Possible 
butterscotch