Google books map feature

Thanks to "Savage Minds," the anthropology blog, I've just come across the new feature of Google books that maps the locations mentioned in the text. Here's the post, and here's a sample map. You hit "about this book" and then scroll down to the bottom of the page. For instance, scroll down on this page to see the map of Hardt and Negri's Empire.

I wonder if anyone has yet noticed that this dovetails nicely with the work that Franco Moretti outlines in his Maps, Graphs, Trees -- a book that I recommend to anyone who wants to think about how technology might change the study of literature in a fundamental way. In fact, Google Books maps Moretti's book. (Let's face it, one reason that I like Moretti's book is that it gives a lot people fits.)

For now, though, this mapping feature of Google Books doesn't yet extend to fiction (as far as I can tell).