From b2evolution manual

This template tag displays a link leading to the contact form for the owner of the current Blog.

[edit] Example

<source lang="php"> <?php

 $Blog->contact_link( array(
     'before' => ' ',
     'after'  => ' ',
     'text'   => 'Contact',
     'title'  => 'Send a message to the owner of this blog...',
   ) );

?> </source>

[edit] Parameters

Name	Default	Usage
before	(1 space)	Displayed before the link (if the link is displayed)
after	(1 space)	Displayed after the link (if the link is displayed)
text	'Contact'	Text of the link
title	'Send a message to the owner of this blog...'	Title of the link (appears in the tooltip box when you leave the mouse on the link)

[edit] Return value

This function return false, if blog owner doesn't allow message form.
If blog owner allows message form then this function return true and displays content.