This morning, before a nine-hour power cut, I had problems posting an answer.
My gripes are two:
1) I am a human, with a reputation of nearby 500 after about a week. I am highly literate, and cannot for the life of me see how any software can suspect me of being a bot. The post in question, prior to a slight edit, can be seen in the thread about politicians and calumniation.
2) Even worse is that the program refused to GIVE me a captcha to solve. I got a box with the dumb message that somebody can't tell me from a bot, plus a link to the Wikipedia page on what a captcha is, plus a Tenniel illustration from "Alice". That's it, end of story. NO CAPTCHA TO SOLVE "below". Now please explain to me how a human can prove his biological nature by solving a captcha that he cannot see.
If this happens again, I shall go back where I came from and never darken your door again.