The image verification graphic on our registration page is very difficult to discern. Recently, I joined the Hardware Canucks forum and saw that they had a very slick human verification interface using Java. It was a 3 or 4 piece puzzle that a person slides into the correction positions. It takes a very few seconds to complete and seems to be very effective. Also, it is very easy to see and comprehend while thwarting bots. Perhaps we could add a script to our site to convert it to something easier than what we have for human verification.