I've got no idea, all I know is that when I zoom in on that page it looks like a font where the antialiasing just failed.

I successfully fixed the web site just now, and it was funny. I made the repair to the .htaccess file to make the Cyrillic post come out correct, and that broke all the other places where I'd special-cased foreign characters (resumé, bodhrán ©, etc) and I had to fix all of those. I'd managed to find work-arounds for that stuff years ago without solving the root problem. Now that I'd solved the root problem, the other stuff stopped working.