Someone complained about Captcha changing and becoming more difficult to read. The reason I use it is to save work. I recently disabled it for a short time and got a huge amount of spam, more than I can cope with. And that was in only about four hours or so.
Thing is, I don't have any control over it. (I don't even see it.) Just the same, I'd be glad for some feedback. Let me know if it's worse than normal and I'll send a message to Google on the slight chance they'll read it and do something about the situation.
(If you're on the main page, click "read more" to send feedback.)