The business world, at least for the moment, respects Google's dominance and success. Businesses tend to imitate the practices of successful businesses. It's a pretty good bet, therefore, that other businesses will try to hire people the way Google hires.
So, if you are now, or expect to be soon, looking for a job, I think you should prepare to answer the types of questions Google asks. One place to start is here: "My Nightmare Interviews With Google". In particular, prepare to do, under some stress, simple arithmetic:
"Say an advertiser makes $0.10 every time someone clicks on their ad. Only 20% of people who visit the site click on their ad. How many people need to visit the site for the advertiser to make $20?” I froze. The problem sounded easy but I didn’t want to cause an awkward silence trying to solve it.
(Here's another suggestion: an "awkward silence" followed by a correct answer is usually far better than a quick but wrong answer.)
With some hesitation--a positive frame of mind is important for job interviews--I also recommend this: "14 Job Interview Disasters".