This is a book that is supposed to teach a system of cleaning "for people who have much better things to do." It's written by members of a professional housecleaning service company. The idea is to approach cleaning in a systematic way, on working as efficently as possible in order to get the work done fast. And they do mean fast -- they claim they can teach you to clean a bathroom in 12 minutes.
There's a lot of emphasis on having the right tools, on going around a room only once, and on doing only what is required to get the job done.
The book is fun to read and it has a lot of wonderful line drawings. I don't think I've ever actually used any of the ideas it contains, though.