calum.org is hosted on a linuxvps.org Linux Virtual Private Server. Why not get your own?
Well, I bought an N80 because it said it supported SIP.
And indeed it did support it - technically. It had a SIP stack that allowed me to register with SIP servers, but it lacked a client to allow me to make SIP calls. That's the equivalent of something saying that it's "Internet ready" coming with an IP address, but no web browser. Technically true.