Screen Readers and CSS Layout
http://www.access-matters.com/2005/07/04/screen-readers-and-css-layout/

Easton, Bob
Access Matters
2005

Abstract:

Screen readers are mostly mystical devices for almost all of us. Few of us actually own them. They’re incredibly expensive. Fewer yet know how to use them well, what their capabilities are, or how they actually work. Is it little wonder then, that big names in our web design world question how screen readers handle modern layout techniques? Not at all. The two gurus quoted below have other strengths, and specialities. They probably haven’t used a screen reader in ages.