extensions
One of the best things – if not the best thing – about Firefox is the rich, vibrant ecosystem of add-ons that has grown up around it. Almost anything you could possibly want to do with a web browser can be done with Firefox... if you're willing to hunt down
font rendering
I had read a few complaints that OS X font rendering was a little wonky, even from Joel Spolsky himself: OS X antialiasing, especially, it seems, with the monospaced fonts, just isn't as good as Windows ClearType. Apple has some room to improve in this area; the fonts
macos
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