Sometimes I remove my own comments if they don't make any sense anymore or if they turn out to be too off topic.
This can lead to "dangling comments" posted by other users. (Initially as a response to my comment).
I'm not sure how the flagging-system works, but I'm tempted to use this as a "cleanup notification" so that the commenter (or a moderator) can delete that dangling comment.
Eg.: I suggested revert the on/off slider in this answer. When the redesign was done, my comment was obsolete (and could actually be read as a suggestion to revert the correct design). So I deleted it. Roger's response should therefore be deleted too.
BUT. I feel bad when I flag other comments. I'm not trying to be cruel - just notify someone in a discrete and polite manner...
Is there a better way to meta-notify other users?
Does flagging have any negative consequence for the flagged user?