I tracked down and fixed a logic error that was in the prior version. The plugin now works as intended and is tested up to WordPress 2.5.1. I hope to be looking into testing and making any necessary adjustments for 2.6 shortly.
Please download the latest version here:
Not sure I understand. Rearranging the pieces of the CAPTCHA image seems like a pretty easy vision problem. It’s another step, but I don’t it’s particularly challenging.
The lines in the words match up across the cuts in the image if you do it right, and they don’t if you don’t.
The Captcha is not meant to defeat people with vision, it is meant to defeat Bots. It should not be to challenging visually as you would likely then lose Users because they happen to be impatient.