I'd love to have this for goats or sheep. We have a bunch of trees and other vegetation on our property so fences would be a pain. If I could set up virtual fences and shift them around the yard it would be fantastic.
There are a lot of places where I see complicated fencing put up to manage cattle in parks where this would be extremely nice as well. Instead of breaking up a nice park with barbed wire to protect areas you could geo-fence them off.