[rlidwka]

I remember some people being offended by an auto-generated captcha text.

[ikeboy]

https://i.imgur.com/pzDFR.jpg

[anonymfus]

http://www.churchofinglip.com/compendium/

[ceejayoz]

That's bad design too.

In a previous job, I generated millions of unique codes. We only used a character set without confusable characters (0 vs O), vowels, etc. Captchas should do the same.

[lostlogin]

Dealing with captcha fields can be deeply painful and is at best annoying. I'm with them.