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Researchers in Norway have identified personality traits which they say make some people more liable to Facebook addiction. In a survey of more than 400 young people, Cecilie Andreassen of the University of Bergen reports how Facebook can cause disquiet and disharmony. But is it the content or the platform that may be addictive. Click investigates.

Video games have evolved exponentially over the last decades. Ahead of a special edition of Click on video games, Gareth Mitchell talks Chris Melissinos, a specialist who has become an archivist of video game, about a large scale exhibition at the Smithsonian Institute in Washington that charts the evolution of video games.

Klaus Obermaier is a renaissance man who wears many hats from choreographer to computer programmer. Almost a decade ago he began work on an interactive piece called Apparition, now on show at the Brighton Festival in southern England. He talks to Gareth Mitchell about how the dance work has evolved over the decade with increasingly sophisticated motion capture technology.

(Image: An illustration made with figurines set up in front of Facebook's homepage. Credit: AFP/Getty Images)