Just today there seemed to be slew of "not a question" flags that showed up. These were generated by various users, and as part of the mod tools (I think), >10k users also get to review the flags.
Looking at most of the flagged posts, it was clear that a moderator had already added a comment to the answer.
Is it therefore useful for me to add my own flag (which I understand to be a vote in favour of the flag), given that a mod seems to have already taken some action?
I don't mind doing this, but if it's annoying to the mods, I can easily stop.
I'm not quite sure what the purpose of this reviewing is.