This module show the world position of the visitors of your site. Before use this module is necessary to register to http://clustrmaps.com You can see the demo to http://ricca82it.altervista.org After the registration to the service clustermaps it show some html line. This line are for insert in the index.php ClustrMaps(TM) is copyright (C) 2005-2006 ClustrMaps Ltd; see http://www.clustrmaps.com for details. This module is a third-party tool not connected in any way with ClustrMaps.