Wait a minute... ex-president Gerald Ford died?!

Lyssa pointed me at an article that brought up something that never occurred to me - how libraries manage the limited amount of space they have for all of their materials. This is to say, they keep track of how often each book is checked out (much easier to do since card catalogues and patron records went digital in the mid 1990's) and if it isn't touched for longer than a certain time, they either throw the books out (dumpster diving at the local library is how I got most of my books when …