Someone

//trying to hit url/tag/my.search.terms yield a 403 forbidden?

function autometa_menu($may_cache)
{
  $items = array();
  if(arg(0) == 'tag' && !is_null(arg(1)))
  {
    $keys = str_replace(".", " ", arg(1));
    $items[] = array('path' => 'tag/'. arg(1), 
          'title' => t('Learn more about ' . $keys),
          'callback' => 'autometa_search_tag',
          'callback arguments' => $keys,
          'access' => 1, //temporary
          'type' => MENU_CALLBACK);
  }
  
  return $items;
}

/** Search Tag function */
function autometa_search_tag($str)
{