So sorry about that! I was working with a plugin today and miscalibrated something and the short version is that it turned off the ability of comments to go through.
To the people who’ve e-mailed me comments, I’m putting yours on the right post. To others, if you wanted to comment on something and feel like coming back, it should work now.
On the bright side, we had a great dinner with friends, which is why I didn’t notice the problem.