With teen attention focusing away from Facebook and onto other social networking apps, Time magazine outlines 5 iPhone apps that parents should know about to stay in the loop on what is popular with teens. Anonymity is a common feature of four out of the five on the list, which may raise red flags for some parents because of the link to cyberbullying. Ask.fm is one that was linked to a teen suicide earlier this year, and Secret has been cited in cyberbullying cases. The in-depth descriptions in the article gives parents a summary of what the app does and pitfalls to help teens avoid.