Today, for the first time in years, I explored Blogger's back end and found a moderation tab. Curious, I opened it to find several comments from readers awaiting to see if I'd allow them to be published. I wasn't even aware that I'd turned on comment moderation; indeed, the vast majority of comments are posted unhindered. But for whatever reason, about a dozen comments have been awaiting my approval. Some are days old; some are years old! One of them was even from France. I've now approved them all, save for a couple that were clearly spam.
My apologies to the commenters, and my thanks for your thoughts!