Hi Adam,
hmm...
That is a good point there. Can you tell me if it works/doesn't work if you DO fill it out? I ask because ReCaptcha was recently purchased by Google and I am wondering if something changed because I know I tested this... Another user reported this past week that it wasn't working for them at all so I am curious before I start digging. In the mean time, please use one of the other CAPTCHA field types.
Thanks,
-Chad