recaptcha is one of the worst captcha services that i have ever used, and everytime that i have to login to this forum or to another website i am so angry because i have to use that captcha, it is insane, because there are times in when i have to reload the captcha because it says that i am wrong, and it gets bugged everytime.
This is the worst captcha that has ever been created, i dont know if it is only happening to me, but it is very annoying to have to be reloading the captcha more than five times in order to login.
For users Recaptcha is one of the worst captcha services. But it's good captcha for website owners and this is why mostly websites using Google captcha. Probably, it gives best protection from bots, but become very inconvenient and annoying for users. Especially for these, who have to solve it many times from same browser/device/IP in a short term. If user solving captchas often, Google thinks it's bot or fraudsterand this is why he get more difficult captcha.