Is there a way to tell if a wiki post update was for the wiki part or for a new reply?

I'll often see a wiki post that has been updated recently.  In particular Steve Thorn's zone specific threads or the PEP/PEX listings.   I think "Yay, let's see what someone said" and click on it.  But then I scroll to the bottom to find no new posts.  OK, they updated the top post with a new link or something.  

Is there a setting I could change so that I can tell the difference when I see a wiki post update?  Or is there another way to tell which kind of update has occurred?

Thanks!

It's very hard to tell if the wiki is full page - sometimes clicking on specific posts don't go to the specific posts.

If you're following by email, then I think it says "edited by" or "post"

I suspect there's room for improvement here.  

Cool, thanks R!  I mainly wanted to verify I wasn't missing a trick or obvious way to tell.