I think I know what happened here. The 'email visible' checkbox is on by default - even though it is blocking your email adr, but it does properly save your settings. on the list.
The next thing I'm going to do with email, is an option for users to completely hide their email, yet receive email. Huh?
User will click to send you email and a form window will open up. They enter their message and then the system will dig up your email address and then IT will send you the email - not the user. With proper 'spam' traps, I should be able to eliminate email harvestors all together.