Hello. I saw that the groupslisting.php is using the groups description in order to build its list of groups.

I think it should use the briefdescription because if users put a 1 page description then the search screen and the groups widget became a bit tooooo long.

What I did is this :

$description = $vars['entity']->briefdescription;
if ($description == "") {
  $description = substr($vars['entity']->description,0, 200);
  if (strlen($vars['entity']->description) > 200)
      $description .= "...";
 }

    $info .= "<p class=\"owner_timestamp\">" . $description . "</p>";

I think it should be good to add a space detection system in order to avoid cutting a word... :p