EDIT:
oh I see that the original link I posted is HTTPS!! Sorry about that, it should be HTTP. I can't edit the original post now.
http://directory.sloop.nz/
Very usefull edit, because with Netscape 7.2 https gives: "Netscape 7.2 and directory.sloop.nz cannot communicate securely because they have no common encryption algorithms"
But with HTTP it works fine and your page is really good!!
At end of the day we are same boat with other old systems users, so it would be good to add these (page are tested with Netscape 7.2):
https://www.msx.org/ - Good example how live can be 39 years old system. (Page ask to accept google.com and another sertificates, but you don't have to allow, tested to work without them)
http://www.vogons.org/ - DOS -WIN98 forum, good to know what you can run with VirtualPC on MacOS9
http://atari.org/ - Jackintosh pages, those 68k computers that never go to PowerPC, they go to Coldfire
talk.maemo.org - forum to older smartphones and tablets that doesn't run with iOS or Android (ok...it seems that this doesn't work with Netscape 7.2 anymore, but works another old browsers Opera9/TenFourFox5)
It is good to get knowledge how they are solved same problems that MacOS9 users might have.