Could you add component properties something like:
OnReCaptchaSuccess
OnReCaptchaFailure
Where the programmer can assign callback procs for each?
Right now I have to add a non-intuitive button on the same form to move to the next stage after the user successfully solves the ReCaptcha. I think most end-users expect something to happen automatically when they solve the Captcha.
I am not sure that my suggested OnReCaptchaFailure property is actually needed, since the component already loops until you enter the correct text. There may be some use for it though, like tossing a user if they click the Captcha too many times.