Life online, pp79-83. This echoes what I wrote here.
I really like the structure of this book. With a lot more academic underpinnings added (as would be appropriate for a thesis as opposed to a book) it will be a useful one for me to keep in mind. I especially like the way she splits the text between 'conversationalised' transcripts and commentary (same font but a device on the page to separate them - I think a lot of fonts can be really messy and irritating to read - this was a problem I have been wrestling with). And her use of 'Interludes' between the chapters is a really good idea for me.
So she uses two fonts: Courier for the actual transcripts and a serifed font (Times or similar) for everything else. Apart from the device I mentioned (actually a centered asterisk) and italics for the reflections on the transcripts and events of the project that she's adding at the time of writing, there is no other 'play' with the fomatting, and I think that's a good way to go.
It's funny that I first read this book a couple of years ago, but it's only now I can really appreciate it. I sometimes think that my general stubbornness in life goes against me in academic work - it seems to take me a while to really internalise an idea and until I do I have trouble working with it. But once I've got it, it's there for good and it becomes an integral part of my thinking.
Added later: the textual separation will be useful for distinctions between what was going on at the time and my later reflection (which is essentially how Markham has done it). Gives depth and layering to the text.