Not that so many of you were using it, but I've just installed the YACCS commenting software. Please feel free to play with it.
Previously, I was using Radio's built-in engine, which is based on Userland's Manila site-management tool. Trouble is, the built-in software didn't give me any control over comments posted on the log. Someone could have come in and posted really offensive or off-topic stuff and I'd have had no way to manage it. That's a Bad Thing, and something that Userland really ought to fix.
YACCS gives me much more control over the entire comments process -- control I doubt I'll ever need, but have to have it in case it ever comes to that.