Did you ever wonder why so many Net pages seem to be down all the time, or never seem to get any visitors, even when they have brilliant designs or are wonderfully placed? I used to. A lot of the explanations seem to boil down to technical faults, but they never seem to explain why as opposed to how. It's always something about the server being down for unforeseeable reasons, or that there was a fault in the line or something equally unsatisfying. Up until a few years ago, I'd have said the same thing as all the other techies: there aren't any reasons why it happens, it just does.