[14 December 2017]
A little less than a month ago, noticing that spam had gotten out of hand here again, I started monitoring comments on this blog manually, to observe them more closely.
Since that time, the About page and the posts still open for comments have received something more than 7500 comments (so, between 200 and 300 a day), not counting those blocked by the Bad Behavior plugin), of which one was a relevant comment made by a human, and the others were spam.
Sigh.