Sandra wrote, "I love cats, but I don't want any part of this freaky demon cat captcha."
"Mail chimp must think I am using my computer hanging upside-down," writes Ishai Sagi.
"Unfortunately, I don't speak 8-bit," laments George B..
"Is the answer to the captcha 'had testes',...um...'castrated'?" wonders Jason McInerney.
Daniel Baranowski was considering Lasik surgery, but now, maybe not so much.
"In a way, I'm glad the captcha I entered was marked incorrect," Bart-Jan Vrielink wrote, "Frankly, I wasn't ready."
"This is one captcha I wouldn't want to meet in a dark alley," writes Daniel Fountain.
"I was presented with this captcha when entering account details at http://www.thesundaytimes.co.uk/," wrote John Dawson, "Does anybody want to guess which of those letters are upper case and which are lower?"