@Chris @another'Homosapien' In the meantime I too found two useful inclusions in chatrooms on Chem and Anime SE.
Chem SE has a time alert. It would tell how much time is left, in sec until an edit in the comment can be uploaded.
Also both this site and the anime site has bots (as it is called, I'm not aware how exactly they work) that would post questions with bounty and I think questions with issues (off-topic and others) in chatroom, drawing users' attention.