Cool, but the power of Skype isn't the VOIP part, it's that others use it want to call you.

No, that is not the point. The post here is about Skype not working on Linux. If Skype is the only way to reach a person, that would be a real issue. Luckily nearly everyone still has a normal telephone number on which they can be reached. There are many options to dial to normal telephone numbers all over the world at very low cost. For voice communication, people should use established, vendor-independent standards.

Actually I fully agree with you. Linux should be about open standards and freedom. Skype breaks both. I suggest to everyone to use some VoIP app based on open standards (SIP) and not the vendor locked Skype.

CSIPSimple seems to be abandoned. Happy to be corrected. On my network it wasn't handling NAT rewriting at all so I couldn't connect to my ISP's SIP server.