Numerous surveys show that Snapchat is one of the most used messaging apps by teens, but many parents have never used the app. In case you are not aware, Snapchat is an application for mobile devices, where photo and video messages disappear after they are viewed by the recipient. To help parents get up to speed on the app, USA Today has created a primer, or a Snapchat 101 for parents. The primer covers what the app is, what it does and why it is so popular. It also covers why many parents are concerned about this app (the disappearing content has been known to foster sexting and cyberbullying) and suggests ways to protect teens who use the app. If you find the article useful, you might also want to check out USA Today’s intro for parents to Musical.ly, an ultra addictive lip syncing app.