A valid e-mail address. All e-mails from the system will be sent to this address. The e-mail address is not made public and will only be used if you wish to receive a new password or wish to receive certain news or notifications by e-mail.
Marking this will hide your email address from other users. It will not show on your posted ads nor anywhere else on the website. Other users will still be able to contact you using the private messaging functionality.
Publicly visible name. You can use this field to present to users a different name than your user login. It is worth doing if you have a long name or a company name that would be difficult to use for login purposes.
This question is for testing whether you are a human visitor and to prevent automated spam submissions.