In our club we like both competitive and social aspect of playing bridge. We were taught it is unethical to look at the partners face while bidding or playing to avoid inadvertently passing unauthorised information. We communicate through cards while playing, but have a nice chat, time permitting, at the end of the hand. On BBO it would be nice to see and hear each other, but I think this would work only at the end of the hand. Perhaps there should be a virtual screen which lifts at the end of the hand. The voice/video then appears automatically, but only if enabled in the user account. The TD would not have to be involved.