The internet may be a utopia for free expression, but it also harbours nihilistic groups and individuals spreading bizarre creeds, unhindered by the risk-averse gatekeepers of the mass media -- and not all are as harmless as the Virtual Church of the Blind Chihuahua or Sexastrianism. With few entry barriers, ready anonymity and no centralised control, the internet offers wired extremists unprecedented access to a potential global audience of...