The Huffington Post – Staff Writer
“How certain apps become popular with kids is a bit of a mystery. The best ones mix all the stuff tweens and teens love ― gossiping, hanging out, clowning around, and meeting other kids ― with an X factor that makes them go viral. Once an app gains critical mass (like, when every kid in school is on it), that’s when the real fun begins. But that’s where things can go wrong, too.”(more)