I wrote the following note to Mike with CGISpy.com after learning that they are now using a visual only CAPTCHA (visual verification) that prevents blind people from signing up for their services.

Dear Mike,
I am a blind user who is trying to create an account on CGISpy.com.  Unfortunately, your visual only CAPTCHA prevents me from completing the process.  Please consider removing the CAPTCHA, replacing the CAPTCHA with another form of protection such as e-mail confirmation or implementing an audio CAPTCHA that will play back the characters so that blind people may listen to the code to be entered.
I anticipate your prompt response on this important issue that currently locks out blind people simply on the basis that they are unable to see.
Best regards,
Darrell Shandrow
Accessibility Evangelist