Next mean thing to be said. >> reporter: now that school is on lockdown electronically. responding to complaints, the creators of yik-yak use gps coordinates to prevent the app from being used on school grounds, protecting almost 85% of all middle and high schools in the country, an unprecedented step. but those kinds of measures aren't being taken by everyone. 15-year-old jamie bushey says she has been bullied, mercilessly on ask fm. >> it could have been my best friend and i have no idea. >> reporter: in an e-mail, ask fm told us, users can report abusive content and also block offensive use...