Reasons to Not Use a reCAPTCHA
The new CAPTCHA system for TheTopTens isn't good, sorry but its true.I can probably imagine SOME big-name websites using it, as well as those which deal in major deals like credit card sites and what not. But not for sites for free creation of content.
"Select all squares with traffic lights" BUT NOT INCLUDING the backside of traffic lights for some reason.
Allow me to explain this one. Users are forced to use these things which basically are unnecessary doses of frictions just for doing things they want to do on their favorite sites (and by favorite things I do not mean anything malicious). While the main deal with CAPTCHAs is to protect spam and site abuse, it also could mean that users could just stop using the site altogether. Not good for a site that needs to grow.
I'm actually surprised that such a CAPTCHA even exists. But I know it's inaccurate. Beauty is on the inside. Regardless, this is a CAPTCHA no one should use.