Sloany,
the site has not been down at all, as far as I know (I've been on it a great deal of the past couple of days), but the search facility has been unavailable. That's because of the load it puts on the server; over a certain amount, and the whole lot goes tits-up - so to speak. Be patient; it will reappear once Danny has established how it can be one without slowing everything else down!