So when a user hits the Twitter button to create a user:
1. The user will be briefly redirected to Twitter to authorize your app to use their account.
2. Once authorized, the user will be brought to the JFBConnect login / register page where they will enter the email, etc to create an account, even though automatic registration is enabled.
3. After the Register button is pressed, the user will then be logged onto your site and redirected to the menu item selected for New User Redirection.
For other social networks that do support returning the email address, such as Facebook, Step #2 will be skipped. A user will be created "behind the scenes". Then JFBConnect will go directly to step #3. If this is not the behavior you are seeing or if you still have questions, then please let us know.
-Melissa