Yahoo Google Map Wars
Yahoo just started fighting back against google maps. They have a developer kit and a beta site for maps. I love google maps, they are so sweet and the API is totally awesome.
But the yahoo maps are flashed-based, and completely stomp google maps for interactive deliciousness, about to the same level that google maps squashed mapquest. They don't have satellite overlays, but they do have awesome driving directions, integrated local search, super fast zoom.
I'll have to give their developer kit a try to see if they have the same idiotic licensing protection as google.