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Videoconferencing
two or more people converse with image and sound on line using the webcam and microphone. -
Forums
two or more people exchange views, information and ideas through messages asking and answering questions and reading the answers. -
IRC
two or more people communicate one each other publicly or privately writing in real time through the network. https://www.youtube.com/watch?v=dJhBgvR2PtU
