There is something easy to think of: a map-based mobile application. Of course, what this website would do is to let the mobile device user discover its surrounding thanks to that application.

While this is pretty straightforward to think of for most creative minds, what is more complicated to accomplish is to bring enough information on a map and still be usable. This problem becomes increasingly difficult for dense areas.

There is also another issue: the relevancy of the service for local people. The thing is that local people already know their surrounding and would not need this kind of application that much. It is more useful for people on the go. As a result, there will be a kind of ceiling on the kind of traffic that map-based applications can gather.