What if Readers Can't Read?
http://www.hyperwrite.com/Articles/showarticle.aspx?id=84

Self, Tony
HyperWrite
2007

Abstract:

If we really do believe in the importance of the audience, the reader, the user, then how have we changed our practice to reflect the changing characteristics, competencies and even literacies of our readers? Have our readers changed over the past few years? The evidence points to the answer being a resounding yes!