Accessible Captcha
This extension changes the captchas from graphic words to user-definable questions and answers. The settings allow you to create up to 8 simple questions and answers that will be randomly chosen in place of the captcha. These captchas are completely accessible as long as you remember to make the questions straightforward and without cultural context (unless you need to restrict usage to a specific group or type of site visitor).
We have tested it (and are using it successfully) on the member registration form to reduce the number of automated signups to ExpressionEngine Sites. If profile linkspam is becoming a problem for you then we would also suggest you have a look at Member Utilities
Checked for EE: 1.6.0 Download: ext.accessible_captcha.php (Zipped)
Installation Instructions
See the wiki at http://code.purple-dogfish.co.uk/
Usage
See the wiki at http://code.purple-dogfish.co.uk/
