One of the losses sustained when we relaunched was any link that pointed to something inside TalkPhysics itself. Please reply in this topic with the URL of any post that has a link that doesn’t work.
For instance (which I’ll sort out when I can…):
https://www.talkphysics.org/groups/1050/forums/1053
https://www.talkphysics.org/groups/1401/forums/1428