The page GIMP - Get Involved from gimp.org has a link https://wiki.gimp.org/ listed. The page https://wiki.gimp.org/ returns:
“Hmm. We’re having trouble finding that site.
We can’t connect to the server at wiki.gimp.org.”
I noticed the site was gone (for me) a few days ago. What is the status of https://wiki.gimp.org/?
Confirmed from my end.
As an aside, this forum seems to be slow to load at times for me.
The site is down permanently. The details can be found in this issue report: wiki.gimp.org down. (#257) · Issues · Infrastructure / gimp-web · GitLab
A copy of most content can be found here: https://web.archive.org/web/20220401065205/https://wiki.gimp.org/wiki/Main_Page, as stated in issue report. It works for me.