My brother owns a restaurant in Flagstaff, which is the base town for the Grand Canyon. So massive numbers of tourists pass through the town every month. He's

My brother owns a restaurant in Flagstaff, which is the base town for the Grand Canyon. So massive numbers of tourists pass through the town every month. He's listed in all the guidebooks and so on, etc etc. What would be great would be if he had a way to target people who were on their way to the Grand Canyon or who had just visited that day. Obviously this is something Facebook could easily provide great insight into. But as far as I know, they don't. He's got a facebook page for his place, and it does well with the locals. And he gets his share of tourists via the traditional routes, but it seems like there's a wasted opportunity here with Facebook...