C-Net News Article "Spam-Bot Tests Flunk the Blind"

An increasingly popular technique for preventing e-mail abuse is frustrating some visually impaired Net users, setting the stage for a conflict between spam busters and advocates for the disabled.

I hadn't thought about this, but it is a good point. Networksolutions' bot test bugs me, because I like to use www.network-tools.com for my domain lookups, and if a domain is registered to Networksolutions, you have to go to their site to see who the owner is.