It's common knowledge that Mac users prefer Safari to Firefox. It is the browser bundled with the OS-- and we know how that generally works out. But it's not just a monopoly play; there are legitimate reasons for Mac users to choose Safari:
Mac users favor [Safari] for its rendering speed, clean interface and fast launch times.
Safari is, of course, a completely competent browser that stands on its technical merits, very much unlike IE6. But if you ask Mac users why they chose Safari, and if you keep pressing them, you'll probably find the deciding factor was that Safari feels like a native Mac app.

