As far as what I’ve learned as an author. I will make my paragraphs and chapters shorter. I find I read more often during the day, but for shorter periods of time. In books, I never really minded long chapters, but somehow I now prefer to read block-length chunks on an e-book.
I think this is something that we will be seeing more and more. Some authors will be conscious about it but, once the digital reader becomes ubiquitous, the digital author will write unconsciously for the medium. The same happens with printed books. How come it’s very rare to have 1,000 page printed novels? The reason is less artistic and more ‘material’ – 1,000 page books are almost impossible to bind effectively. Even short books, twenty or thirty pages, are rarely printed not because writers cannot write them or that there is an artistic reason for doing so. The don’t get printed because the industry doesn’t have a production process that makes such printing profitable. Israel’s comment suggests the symbiotic relationship between reading and authoring which is ushering in new habits of reading and forms of writing. And it’s very similar to the changes that took place when we moved from scrolls to the codex.