The site has been down for several hours. My hosting company is looking into it, but it appears to have been a problem with the security package I have installed on the server to prevent breaches and hacking, and the problem may have been caused, ironically enough, by some sort of security attack.
Sorry for the downtime. We're looking into the problem further to work on preventing it in the future.
Don't blame me; I voted for the Luddites. Heheh