MS Virtual Earth... vs Google Earth

yet another Microsift product against Google.
its Microsft Vitual Earth, go to http://maps.live.com/ and you can zoom in and out of places on the site.
Also provided 3D modals for which you have to download software.
But this web interface is also cool and this mix Maps and real terrain quite well. The maps and features like traffic monitering are really good.
Microsoft has 3D buildings in its virtual world which are photo-realistic. There is expected to be 15 cities with 3D buildings at launch, with 100 by next summer.
The service will have an API, so people can use the Virtual Earth globe in their own apps and mash-ups.