I got a response as well, in which they claimed they were still "working on developing an audio captcha."
I responded to them with the following:
There's no need to develop one-- it is literally *built in* to ReCAPTCHA, which you're now using. You just have to add a link to it.
According to http://recaptcha.net/apidocs/captcha/client.html all you need to do is add a single JavaScript link to "javascript:Recaptcha.switch_type('audio')", and then clicking/following that link that will switch the CAPTCHA to the audio version.
(And I totally agree on your last paragraph; I'm sighted as well, and it was quite difficult to find a contact link starting from the registration page.)
Re: Response from the Ning team!
I responded to them with the following:
There's no need to develop one-- it is literally *built in* to ReCAPTCHA, which you're now using. You just have to add a link to it.
According to http://recaptcha.net/apidocs/captcha/client.html all you need to do is add a single JavaScript link to "javascript:Recaptcha.switch_type('audio')", and then clicking/following that link that will switch the CAPTCHA to the audio version.
(And I totally agree on your last paragraph; I'm sighted as well, and it was quite difficult to find a contact link starting from the registration page.)