We love Google Earth at work. For FREE it is just amazing.
We make the same type of aerial maps that Google Earth has. We charge a lot more than free.
The free stuff is like a drug pusher giving out samples. We sell the good stuff, and the OLD stuff. I have an aerial of my neighborhood back when it was just a wheat field in 1951, 1961, 1971 and up to the day it was a neighborhood in the early 90s.