Buy Your Book by the Chapter?

Tech publisher Tim O’Reilly is touting a new service where customers have the option of buying individual chapters instead of the whole book. He likens this to digital music though he concedes that “books tend to be more of an essential organic whole than albums…”

I ‘spose it’s important to try new ideas but I’m trying to imagine which of my books I would rather have just a chapter of. There aren’t many but maybe it depends on the individual.

Update: Someone in comments intelligently writes: “Do you think this will affect the way chapters are written…?”