This app hadnt performed for me over the course of several attempts. The last of 10 tries finally got it going, though the call was too short to really build confidence. I only noticed that the UI was better in ways than some other apps I keep. Yet I have had more reliability from the other apps, which are
Tango, ooVoo and Nimbuzz. These, like Seen, are essential. If 3 of them fail at a given time, the 4th will redeem you. GET ALL 4 of them. I will update my rating after I attempt the usage of this app again. For now, it trails the others a bit.
Bill(USA) about Seen - Video calls for Facebook