Facebook has unleashed an attack on yet another teen app. The social networking giant is testing Bonfire, a group video chat app that is quite similar to Houseparty, The Next Web reported Wednesday. Bonfire has the tagline "Your friends, your fire" and allows users to chat with multiple Facebook friends at once via live video. Again, similar to Houseparty, each person's live feed divides up a part of the smartphone screen. While the app is only available to download from the Danish iOS App Store, we were able to test it out via an invite from The Next Web's Matt Navarra.