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It's perfect for something like a protest, especially if you're worried about a (non-local) adversary flooding the network with irrelevant information.

See some of the coverage on the use of FireChat in Hong Kong (http://www.cnn.com/2014/10/16/tech/mobile/tomorrow-transform...).

Along a similar vein, I could see localized information being very useful during an emergency or natural disaster. "Downed power lines on Main Street" means different things depending on the poster's geography.




But you can't take your cell phone to protests anymore - we live in a constant mass-surveillance society now. So unless you don't care that that protest will be added to your personal profile, you leave it at home.




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