Get flash to fully experience Pearltrees
Summary: The evolution of GIS on the Web has, until recently, been limited by traditional Web mapping technologies.
This comparison aims to serve as a basis for those seeking a first approach to Web mapping technologies at the client side.
I have lately seen several blogposts confused about which datum and projection Microsoft’s Live Maps (Virtual Earth) and Google Maps use. As most people already know by now, they render the round earth onto a flat screen using a Mercator projection.