For those of us that not only use skype but also finarea products such as voipbuster, voipcheap etc, the two post below on my are important information:
http://solokay.blogspot.com/2006/03/voipch...pbuster_09.html
http://solokay.blogspot.com/2006/03/call-r...for-just-1.html

Hope it helps somebody.