"Sup?" This new app is a short video messaging service where you can literally take over your friend's smartphone camera if they accept your request. By 'Suping' your friend, it turns on the video camera on their phone and you can see what they're up to for 10 seconds.
According to Yahoo!, when you send a Sup request, Sup notifies the friend you want to start a video session with. It pings you when your friend has accepted or declined the request, and then connects your two devices in a FaceTime-like call.
