Marketing Sherpa has an article entitled: Feeling Dorky -- 10 Tips on Presenting at Webcasts and Live Teleconferences. We've recently started using videoconferencing at our office, and after realizing I had spent a decent part of the test looking shifty from looking off screen, long forgotten television knowledge started to resurface. The article linked above has some good tips. I'm going to try and look directly at the camera, not wear shirts with small patterns on them, and be careful with the handwaving.