A string variable containing the nickname of the currently logged-in reader. This is empty if the reader is not logged in.
It can also be used as a boolean variable; it is true if it contains a value.
Blogware account holders enter their nicknames in the Nick Name text field of the Settings section for their account. If no nickname is entered, their nickname becomes [first name][last name] where [first name] is the name they provide in the First Name field and [last name] is the name they provide in the Last Name field.
Example
The example below displays "I'm told that you like to be called " followed by the reader's nickname if the reader is logged in.
{{if user.nick_name}}
I'm told that you like to be called {{user.nick_name}}