How many of you organize your library into a specific order?
I had to organize mine, just to keep track of stuff. I established four major categories: General (fiction and non-fiction, biography, etc.), Military History (ancient to modern), SF & Fantasy, and Religion. General's about 54 linear feet, Military History about 45, SF & Fantasy about 25, and Religion about 40. I also have several dozen linear feet of books being sorted out, minor categories (e.g. Shooting), and so on, as well as my totes outside in my store-room, which will get sorted bit by bit.
I'm hoping to reduce my library to under 200 linear feet by the end of the year - I hate doing it, because I love all my books, but I've got to be realistic. My rule of thumb is that if I haven't re-read a book in a year, it goes into the "Questionable" category. Within that category, if it's a really good book that I know I'll re-read occasionally, I'll keep it: if not, it goes out.
I also sort the books alphabetically by author within each category. That helps me keep track of them, avoid buying duplicate copies (something I've done too often!), and helps me remember to put them away after I've read them - when a shelf looks like it's moth-eaten, time to pack books away again!