Occasionally my friends and I go to tinychat to do a multi-person video chat. Usually when i click "broadcast" there are many video options and I choose the one that has myself on it. It usually says something like "USB camcorder" or something with USB in it. However; the other night I tried to go on, and it wouldn't let me. I noticed that the video options had gone down to about 4, and the one with myself was called "Built-In iSight." I have never had this option before, so I clicked it. the green light next to my camera flicked on and then off. You couldn't see me. Was it something I did? All the video sharing websites do this; however on my photobooth and ichat it works fine... Help?!