The world uses (or will use) Linux or FreeBSD

MAC OS X is pretty stupid right now. Mac OS X is the most vulnerable and most expensive. Any Mac OS X is easy to hack. The US military and Government use the Linux operating system. Linux and FreeBSD have way too many free upgrades to ever get an virus. Linux and FreeBSD is the future. Android Linux phones are even going to surpass iPad and iPhone in the future. Firefox Linux is going to be competitor to Android in the near future. Mac OS X cannot compete with free upgrades, Windows applications in Wine, and virutalization.