Book lovers out there, how do you keep your library organized so you can find things?

Or don’t you?! I was reading this question and the answers people were giving and I wondered if there are any secret methods to keeping it organized so you don’t have to search for hours to find a book. Obviously you could sort by category, alphabetically, etc. Whatever you do, does it work for you?http://www.fluther.com/110603/how-many-linear-feet-of-books-do-you-have-in-your/