This will REALLY work....
Given the current accuracy of in-phone GPS, this sounds like a crock of shite to me.
So it's Friday night, you want to find out where the boys are for a shandy or 2, You use google to find out where they are, 5 minutes later and you can see they're somewhere on the high street within a very large circle and you have to phone or text one of them to find out exactly where they are.
Then again, we have the paranoid-parent brigade who will probably buy into this in droves and it will be a raging success.
Paris could use it when she finds her friend.