I just recently found this oldish post and was wondering if a system could be made to "Ping" or PM a person when their name is mentioned in a post. Maybe a system could also be implemented where you can click on usernames in a post and be taken to their profiles…

Part 1: like an @mention in Github? THat *would* help... see your influence!
Part 2: You can do it yourself, it just takes more work. I'm assuming you figured that out already, because it's crossed out...

So like @SM84CE would send a PM saying "You were mentioned by USERNAME in THREAD"? There's this one forum that I'm on that does that...

I know it was done on Omni, and it's quite useful. For an example of their interface:

I like this idea, occasionally, I see my name come up in someone else's post, but I don't read every single post, so I probably missed one or two. This is probably even more relevant for people like PT_, Kerm or Mateo who get mentioned all the time. Regardless, if someone mentions me in a post, I definitely want to go read it, so being notified would be a good thing. You could even have a section on your profile like the "Find all posts by mr womp womp" section, but for mentions.
It wouldn't be very difficult to link to the person's profile either.

I think modern forums do this. Not that I'm complaining, Cemetech works on some old hardware and I appreciate that.

Ok Boomer.

Ok, I like computers from the 90s so I'll have to just accept that anyway I do like the feature, if it could be added I think that'd be great.

This is infeasible to add support for in the current forum backend, but could be a future feature in the cemetech7 backend.