To get really useful information, you will need to use a good captcha monitoring service, for example: http://captchathecat.com / it also provides analytical tools such as input percentage and average recognition time. It has categories for each captcha and has the ability to filter them using different criteria.
To get really useful information, you will need to use a good captcha monitoring service, for example: http://captchathecat.com / it also provides analytical tools such as input percentage and average recognition time. It has categories for each captcha and has the ability to filter them using different criteria.