I had never heard of the app Yik Yak. It is a Twitter-like app that uses GPS location sensors to allow people to post their views (“yaks”) anonymously within a highly limited geographical area of 1.5 miles, thus making it a hyper-local social network. This enables people to comment anonymously on matters of purely local interest. You can read how it works here. The app is particularly popular on college campuses where people can share their opinions on what’s going on in and outside of class.
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