// If it's not a Twitter-style reply, or if the user WANTS to send replies.
if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||
// If it's not a Twitter-style reply, or if the user WANTS to send replies.
if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||