We here at MyWikis have done away with CAPTCHAs with reCAPTCHA's new No CAPTCHA feature! Just press the check mark and you're set! (Note: If Google thinks you are still a robot, you may still have to fill out a CAPTCHA. In which case you should probably change your browsing habits. If you are a spammy robot, sucks for you.)
We're going to slowly roll out this awesome No CAPTCHA feature, especially once MediaWiki's ConfirmEdit extension updates their interfaces to reCAPTCHA v2.