static public function submit( $url )
	{
		if( $url instanceof ADT_URL )
			$url	= (string) $url;
		if( !is_string( $url ) )
			throw new InvalidArgumentException( 'URL must be string or instance of ADT_URL' );
		try
		{
			Net_Reader::readUrl( self::$baseUrl.urlencode( $url ) );
		}
		catch( Exception $e )
		{
			self::$lastError	= $e->getMessage();
			return FALSE;
		}
		return TRUE;
	}