My apologies for comments being broken for so long on this site. Spammers were pounding the comments script, and we had to remove it entirely just to keep the server from being brought to its knees. (I still get around 1000 attempts per day, even though the script has been gone a month or more.)
Comments are now working again, with a new JavaScript hack that disguises the script name itself. It’s an easy hack to get around, but I’m hoping not enough people are using this particular hack that spammers have found it worth it to automate a work-around.