How can I disable the Image Verification box that appears when people sign up to my mailing list?
From Bravenet Wiki
The Image Verification is built into the Mailing List service to prevent automated spam. This feature is enabled by default, and can only be disabled if you have the upgraded Mailing List.
If you have the Professional service, please follow these directions to disable the Image Verification:
1. Log into your Bravenet account
2. Click on the "Mailing List Service" tab
3. Click on the link "Service Settings"
4. Under the General Settings title, look for Disable Captcha, and select "Do not use captcha (no image verification)"
6. Click on the button "Save Changes"