The New York Times has an article on email narratives (or here if you have no subscription), mostly discussing Intimacies, a project by Eric Brown where you download a self-contained package that simulates emails, IMs and so on, all giving you “A short, fast, entertaining ‘read’ in a new format for our new age!” You need Windows to “read” it, so I haven’t yet, though obviously I’ve been meaning to for ages. The NY Times article also includes comments from Rob Wittig and Noah Wardrip-Fruin. Noah extends his points over at Hyperfiction, and there’s a thread on Grandtextauto about it too.