Edit:
Stealing an idead from a very old thread that I can't find, someone posted a editable site. Perhaps you can build s short document with the main features for HN users and post something like https://revise.io/clone-now-this-doc/oury1n34-b9g42wkt assuming `docs-clone-now-this` is the correct spell to make a copy of that URL.
How long does the site retain the docs of unlogged people? Did you already got spam?
Appreciate the input. :-)