One of the most important differences in writing for e-publication is the pace of the story must be much faster to hold the reader against the siren call of the internet, just a mouse click away. There is far less description in my work than in most books. It slows the pace. I chose not to use some of the traditional elements of style for this format. I don't use italics.
Stressed words are in capitals.
They're easier to read on-screen. You can nearly always find who's speaking by looking in the paragraph before or after. I don't break monologues into paragraphs. Everything the character says is in one set of quotes. A story you hear with your eyes was my goal.