"MSN Messenger 7.0 includes a new conversation feature on its instant messaging software that allows users to communicate by video. It will also include advertising, with MSN running 7- to 10-second TV-like Flash ads before users are connected. MSN Messenger boasts 155 million users worldwide."
This is incredibly evil, but why stop short of the real wickedness? Video messenger users have webcams, by definition. Throw in some face recognition software a-la EyeToy and have them star in these commercials.