LatestComment 1.1: URL problem AND permissions
I have recently tried this and found two quirks.
1) the URL generated had "vanilla2/discussion" by default and didn't go to correct location.
I managed to resolve this by editing line 52.
2) More seriously, it lists topics to which users may not have access by virtue of them not having administrator rights.
This is a very useful addon and look forward to seeing a more complete version.