I've always been one of those fussy people who keeps their books in neat alphabetical order by author. It just seems right somehow. But I've made the accidental discovery that a disordered bookshelf can be a fun bookshelf.
When we moved into the new house, the priority was to get rid of boxes, rather than be too careful about what went where, and though I'd got rid of about 1/3 of my books before moving, there were still many more boxes of books than anything else. So to get things moving, I just threw things on the shelf any old how. And somehow, I rather like the sense of danger from never quite knowing which book you are going to lay your hand on next. I've already rediscovered the Sherlock Holmes short stories, something I probably wouldn't have dug out of the alphabetized shelves, but that leapt out at me from the random collection.
I don't know if it will last, but for the moment I'm going to keep it this way. I'm embracing the dangerous bookshelf.