User ID should be 3~20 letters long and consist of alphabets + numbers with alphabet as first letter.
Password should be 6~20 letters long
Name should be 2~20 letters long
Nickname should be 2~20 letters long
This will be used as author name of you articles.
If you have a paypal account,please your paypal account email.
Email address will be used to modify/find password after email verification