Voip Stunt, like Skype and other programs Voice over IP, allows the transmission of phone calls by internet towards other registred users. Its great "innovation" resides in the possibility to call home numbers free of charge, although the conversations are limited to a duration of about 2 minutes/ in some cases the phone calls last up to 10 minutes. Up to 300 minutes of free phone calls can be done every week. This limitation is abolished by purchasing a 10 euro credit on the www.voipstunt.com website, which is to be used before the expiration of 120 days after the purchase for phone calls towards mobile phones, or towards one of more than thirty world destinations. Calling home phone numbers on national level remains free of charge and without a time limit in this case. In order to be able to use this service, you need to download from (www.voipstunt.com/en/download.html) and install the software, register by inserting username, password and a valid email address. The software's interface is easy to use, in fact, once the programme has been opened, all you need to do is insert the phone number of the user you wish to call, and remember to insert the international code before the number; otherwise, the call will not be made. (The national code for Italy is +39). The service is currently available for the following countries: Argentina, Australia, Austria, Belgium, Canada, Cile, Cina, Denmark, Finland, France, Germany, Hong Kong (+mobile), Hungary, Island, Ireland, Italy, Japanon, Liechtenstein, Luxembourg, Malesia, Monaco, The Netherlands, New Zealand, Norway, Portugal, Singapore (+mobile), South Corea, Spain, Sweden, Taiwan, Great Britain, USA (+mobile). The software is now available in beta version and it is usable only from PC with Windows XP and 2000 and with connections of at least 64 kbit/s up/downstream (it does not work with 56k internal modems).