VoiceOver and Safari: Screen Reading on the Mac
http://www.456bereastreet.com/archive/200505/voiceover_and_safari_screen_reading_on_the_mac/

456 Berea Street
2007

Abstract:

One of the most interesting features of Mac OS X v10.4 Tiger, the newest version of Apple's operating system, is VoiceOver, a built-in screen reader. Up until now, people needing a screen reader have been more or less forced to use Windows because of the lack of decent screen reader software for the Mac, but now it's built right into the Mac OS.