Google Maps of Sci-Fi

I've got a new post up on io9 this afternoon, and it might be of interest to readers here.
That post asks: Can fictional sites and spaces – in particular, things taken from science fiction – be included in online map sets, and what might the implications be? You look up "New York state" on Google Maps, but it includes a new layer of information: the routes and locations traveled by characters in Steven Spielberg's War of the Worlds. Or you go to London only to find that the dashboard navigation system in your car includes all the major locations from The Day of the Triffids. In other words, if we can map science fiction into our cities, using online tools, how might that affect our experience of urban space?
These and other questions all pop up in Google Maps of Sci-Fi. Let me know what you think.