Earthcaller, as mentioned in my earlier post Free calling website earthcaller.com - offers usa calling offers free calling to USA landlines and mobile. A similar service is being offered from Bueno.com and Gizmocall.com

Bueno utilizes Microsoft’s Active X technology, which only requires an Internet Explorer plugin to be downloaded before using this service. Other browsers, such as Firefox, Opera, or Safari do not support Active X and can’t be used. We don’t have the