> SIP? SIP is terrible, it's an attempt at replicating the telco model of separate control plane vs talk channel of a traditional telephone company.

Good point and I agree, but it solves problem of direct communication between users (NAT traversal). It would be great if SIP had plain and simple GET method (without need for session/dialog).

> This doesn't follow either. If I host a webpage on my personal computer, I can host the js/css in exactly the same way.

How can I get your js/css from outside, if you are behind NAT? STUN? NAT traversal is already part of standard SIP infrastructure.

Sorry on stubbornness, just trying to brainstorm a little.