The conditions of production of a text can affect that text, and changes in the technology of writing have changed the styles in which things are written. The actual book under discussion here isn't due out till 2013, but there's food for thought in the article.
A Literary History of Word Processing
http://www.nytimes.com/2011/12/26/books/a-literary-history-of-word-processing.html?_r=1
A Literary History of Word Processing
http://www.nytimes.com/2011/12/26/books/a-literary-history-of-word-processing.html?_r=1