Another day, another anonymous app “taking over” schools. After School lets students post secrets, and gossip, about their classmates—and not surprisingly that has led to some controversy. It’s only been launched for three weeks, but posts have already led to an FBI investigation, and one Michigan high school is petitioning to have the app removed from the App Store. After School has been downloaded by 100,000 students from 14,000 different high schools. (Recode)