User account

Spaces are allowed; punctuation is not allowed except for periods, hyphens, and underscores.

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.

There aren't any, it's just another way to stop spam.

This is used in place of a Captcha to stop spam. It's usually enough.