I have made several iterations of this sort of project during the past year, this one being the most recent. In my first iteration, users had to made accounts to use the app which is no longer needed. This allows users to be a little more anonymous.
I have also added a map to increase the visual component of the app, to see where in relation to where you are the post was made. It's almost like public chat in an MMORPG - except in the real world.
This app could be used to share something funny you saw, find someone to study with on a large college campus, talk about your sports team on an away game and so on. You can even travel to other locations if you're planning a trip there and want to get advice, or to just talk to new people.
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