I am witnessing a new trend in my country. Pakistani politicians are using video conferencing to talk to their supporters. They are also using them to carry out party meetings. This enables them reach out to party members who live in other places.
I think people are using this service because of decrease conference call rates. There are hundred of service providers that offer conference calls. Their competition has brought the price down.
Some of friends use the service of zipconferencing.com. They say it offers better service at reasonable rates.