Automate hyperlink to send variables to webform
If you are doing it in Drupal 6 then hook_nodeapi(&amp;$node, $op, $a3, $a4) is to alter node object for additional information.

function custom_module_nodeapi(&amp;$node, $op, $a3, $a4){
  if ($op == 'view' &amp;&amp; $node-&gt;type == 'project') {
    $node-&gt;content['project_link'] = array(
      '#value' =&gt; l('Sign Up', 'node/[id]', array('query' =&gt; "project=" . $node-&gt;title)),
      '#weight' =&gt; 100,
    );      
  }
}