Interestingly Yik Yak have geofenced middle and high schools, preventing the app from being usable in school anymore: http://techcrunch.com/2014/03/13/amid-vic

Interestingly Yik Yak have geofenced middle and high schools, preventing the app from being usable in school anymore: http://techcrunch.com/2014/03/13/amid-vicious-bullying-threats-of-violence-anonymous-social-app-yik-yak-shuts-off-access-to-u-s-middle-high-school-students/ http://techcrunch.com/2014/03/13/amid-vicious-bullying-threa...