Airtime has launched. It's a new social app that aims to give you and your friends "rooms" to hang out in when you can't do the real thing. The rooms are always open to anyone who is invited. You can drop in and talk with your friends over audio or video (up to 6 people) and share music, videos and pictures with them. People can drop in and out at their leisure, and if you absolutely have to have everyone's attention you can send out a big notification to let your friends know you want to hang out.