static public function update( $key, $hosts ){
		if( is_array( $hosts ) )
			$hosts	= implode( ",", $hosts );
		$url	= sprintf( self::$urlUpdate, $key, $hosts );
		try{
			$reader		= new Net_Reader( $url );
			$reader->setUserAgent( "cURL" );
			$response	= strip_tags( $reader->read() );
			if( !preg_match( "/Updated [0-9]+ /", $response ) )
				return 0;
			$number	= preg_replace( "/^.+Updated ([0-9]+) host.+$/s", "\\1", $response );
			return (int) $number;
		}
		catch( Exception $e ){
			die( $e->getMessage() );
		}
	}