No-one is safe? Well I could always be mown down by a London bus just by stepping outside. But I still wish to step outside. As long as you don't post idiotic stuff or succumb to a phisherman or tell us all your PIN number I reckon you're as safe here as anywhere else. Even if we all know your name. Which doesn't mean completely safe, of course. I suppose we could just live in a convent or a monastery. That could be quite safe, though some of these Mother and Father Superiors, you know...