app where people can chat to strangers based on location. Up to a 1km radius. Hence, could find someone on a bus, or train. Chat someone up they're too scared to approach. Once they get into conversation, they can choose to add each other. Connect via fb, use location settings. Thinking of a name FindMe or WhosThere. Also offer in app purchases, hence choose which gender and age group you want to chat to specifically, etc. For a low cost.