What do you think is better? Nasa world wind http://worldwind.arc.nasa.gov/ or google earth http://earth.google.com/
Both Nasa and google had done a great job on creating a virtual earth with that you can zoom into any place on earth. They both has their pros and cons but in your opinion is better than the other.Thx
google earth is a ripoff. it's easy as that.
both really need some nice atmospheric scattering shaders
If you want a discussion you'll need to start it yourself, preferably with a hypothesis or simply YOUR opinion . You say they both have pros and cons, what are they?