Police say messaging apps like Kik that can be used anonymously are linked to a growing number of crimes, our panelists told us in a recent show on the topic.

According to Kik itself, the app is used by 40 percent of American teenagers. Panelist Jen Golbeck, who’s an associate professor and director of the Social Intelligence Lab at the University of Maryland’s College for Information Studies, answered listener questions about how to stay safe in a live Facebook chat after our show.

On the apps discussed during the show

On how to reach your children

On parental controls

On when and how you should report suspicious behavior

On profiling of Internet users

On whether legislation could help with this issue

Want more? Read the entire Q&A, or listen to our full hour.

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