Market Share
Most people would say that somewhere around 80-90% of computer users use Microsoft Windows. At first glance, that statement seems about right. Unfortunetly, the reality of the situation is a little more complex.
Take the average office worker. In reality, while they might be a single Windows user, they probably use at least two different Windows computers; one at home, and one at work. On the other hand, most Apple computer users that I know only have Mac. In fact, a lot of them use a Windows computer at work.
