So people would post what stations they hear and others could look this up and see "John in XYZ heard ABC station at 10pm tonight"?
I can see some benefit to this but I wonder who would upload the data and if it would be a manual process or if it could be exported from a program?

I also wonder what the value of this would be? For me, I don't think many other people would be posting Australian stations and unless they are close to me, the value of knowing somebody 700km away heard a station which is only 300km from me is limited.