Heureka!

Ok, I didn’t find “it”, but I found “something”!
Do a search for a keyword in discussions : then look at the entries for the discussions: They report “Last entry by USERNAME at TIME”…
So the thing we want is in there somewhere… now we just have to tweak it out into the open! 😀

I put the request in the suggestions box… I can’t think of a way to hack this, since, sadly the search engine as-is doesn’t seem to look at the names of participants, nor at the text posted.