You want us to tell you what school we attend? While I wouldn't mind this as my amenity is not super important most users on here would never do this. Most like to stay under the radar. Not only that you would have a major problem with bias if you don't get more then half of the people on the entire network to respond. Don't count on this working
I see now you just want geographic areas. Still what is the point of this whole thing anyways? Why do you care? Are you trying to market something?
Or they just constitute the overwhelming majority of SDN users.