Cyberstalking is the new urban terror – the message rang home loud and clear at the Digital Safety Conference in London last week (Friday). For although, in Cyberspace, no-one hears you scream, increasing numbers of people are getting off on imagining it. The evils of instant communication – texting, live chat, social networking – were laid out in lurid detail before delegates meeting in a brick-lined space known as The Brewery, near the city’s Barbican…