If you want to keep track every move of the moderators of any thread you step in, this add-on is suitable for you. By adding a moderator log on a thread, you can see all the moderation actions performed in that thread.
This add-on is based on group permission. You can set which group(s) you want the user check the Thread Moderation Log by setting Can view thread moderation log to Allow. By doing this, your users could check apparently any changes, the important notice, the particular announce… that they don’t want to miss.