Tinder is a location-based dating app that allows users to communicate if they mutually "like" each other's profiles. The document discusses how Tinder has over 50 million active users who spend 90 minutes per day on the app. It then presents two cases where criminals used Tinder to lure victims - one drugged and sexually assaulted women, and another lured a man out of his car to rob and vandalize his vehicle. The conclusion is that online dating can be dangerous because you can't truly know who you're interacting with on the other side of the profile.