You can use an advanced theme for that (file qa-theme.php) and override as follows:
function post_meta_who($post, $class)
{
if(isset($post['who']))
{
// replace username with real name from userprofile
if(isset($post['raw']['handle']) && isset($post['raw']['userid']))
{
require_once QA_INCLUDE_DIR.'qa-db-metas.php';
$userhandle = $post['raw']['handle'];
$userid = $post['raw']['userid'];
$htmluserlink = $post['who']['data']; // in tag is userhandle
// get real name from userprofile field
$realname = $this->qa_db_user_profile_get($userid, 'name');
if(!empty($realname))
{
$post['who']['data'] = str_replace('>'.$userhandle.'<', '>'.$realname.'<', $htmluserlink);
}
}
$this->output('<span class="'.$class.'-who">');
if (strlen(@$post['who']['prefix']))
$this->output('<span class="'.$class.'-who-pad">'.$post['who']['prefix'].'</span>');
if (isset($post['who']['data']))
$this->output('<span class="'.$class.'-who-data">'.$post['who']['data'].'</span>');
if (isset($post['who']['points']))
{
$post['who']['points']['prefix']='('.$post['who']['points']['prefix'];
$post['who']['points']['suffix'].=')';
$this->output_split($post['who']['points'], $class.'-who-points');
}
if (strlen(@$post['who']['suffix']))
{
$this->output('<span class="'.$class.'-who-pad">'.$post['who']['suffix'].'</span>');
}
$this->output('</span>');
}
} // END post_meta_who
