The magazine series about computers and the digital world. Tonight, Benjamin Woolley enters the on-line fantasy worlds known as multi-user dungeons, or MUDs. Davey Winder investigates the future of the Internet, and asks whether a Utopian vision of its potential can survive commercialism, censorship and changes in government regulation. Artist Toshio Iwai demonstrates his extraordinary machines, which combine state-of-the-art technology with the moving images of a century ago. The regular Hotlist spot goes to London's Kensal Green cemetery to visit the grave of Victorian scientist Charles Babbage , subject of a campaign by Science Museum curator Doran Swade. And author Kevin Kelly suggests some of the strangest sites to be found on the World Wide Web.