Nah, it needs to be IP. IP is well estabilished protocol, everything speak it. Once you set it up, you can use it whatever you like. Web pages, gaming service, IRC, Mail, P2P confereces, everything. Everyone will bring it own slice to the pie. You love networking, became PoP and peer and provide access. You just want content? Connect to closest PoP, get IP + DNSproxy and vioala.

The networking part exists, it's called DN42. But it's hard to set up. I don't see why you'd use this instead of an application layer password.

I know DN42, but this network is more oriented toward R&D and experimenting. Yeah, its not for your avarage Joe. But your avarage Joe can buy connection from VPN provider and use it, and so we can provide user friendly PoPs with minimal skills needed to setup, supporting different VPN software.

or you put a password on a website

Spoken like a true websurfer. You know, networking is not only about WWW.

You can also put passwords on things that aren't websites.