> Unless I misunderstand, I am trying to go the other direction - serve stuff
> to everyone else, not open content from another network in my local browser.
>
*** If you take the case you're running your own (PSYC) server, then you can
serve contents to everyone else, over different protocols, including
HTTP or HTTPS.
Not without a routable, unblocked IP, can I? Most users do not have one, and that isn't changing any time soon.
For many, a DynHttpd would be just the missing link so they make their local PSYC server (or whatever else) visible to the world.
But I'm not sure I understand your point entirely.