Never tried videoconferencing before: I don’t really see the point. But my mum’s just got a new macbook, and upgraded her skype, and wanted to play with her new toy!
So she skyped me. And as soon as I replied, I could see her in a skype window. Looking at it, there was also a button to turn my camera on. Hey presto, we’re videoconferencing!
 Now sharing something on screen (“whiteboard”-style) is another matter, and makes a lot of sense when discussing something complex. And yes, I can see the plain ol’ video has a point too when there’s something visual to demonstrate. But not just for its own sake.