Alejandro Kaufmann did traces mostly on Asian sites, and noticed that many of the traces followed old colonial lines: traces to Hong Kong and India tended to go through British routers, and traces to Vietnam tended to go through French, for example. Not sure if this is coincidence or a result of their telcos still working together, but it was an interesting trend.
hello. | notes on physical interaction, sustainability, networks, simians, cats, and more. (Tom Igoe, of Physical Computing fame, in 2009)