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Flagging should really only be used to stop plagiarism, racist, cruel, and plain wrong posts. Not for a differing opinion on a fair subject. It's not the money it's the injustice.
I see plenty of posts that I don't agree with but would never flag a post for that reason, opinion should be respected.

But regulating the value with a flag is allowed. I am free with my vote. If post got to much value i can regulate it down.
I still respect this opinion even if i regulate the value down. Then it still got value.
Only less. Others regulate it up. Its just free market of opinions.