Nice viral for the Spider-Man 3 movie launch: download this layer (KMZ file) and give New York and the different movie locations a virtual visit. Apparently Spider-Man sits somewhere on one of the 3D buildings. If you are yet to install Google Earth then get it here. With the 3D buildings moving in I reckon we’ll see this sort of viral more and more in the near future. It has been coined as mapvertising.