Once you install the plugin, to start a video chat, just click on the "Video & more" menu at the bottom of your Gmail chat window, and choose "Start video chat." You'll have a few seconds to make sure you look presentable while it's ringing, and then you'll see and hear your friend live, right from within Gmail.Obviously you and your contact will need a webcam (or at least a microphone), but many notebooks these days have them built in. Anyway, watch the above video to see the new chat features in action.
In the meantime, I've got a question: Have you ever used video chat to communicate with someone for business purposes? Hit the Comments and let me know. I'm genuinely curious.