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That's unlikely. Your reputation can generally only be damaged with net negative posts.

I don't understand but I don't move further up since weeks. Can you explain?

I don't know why you didn't move, if that's the case. However I can say that with that experiment, the net reward shares being applied was dramatically less than before the experiment. Because reputation is based on how many shares are being applied to your account, it moves more slowly if there are less (after negative shares are counted against positive).

Thanks for this info. I will read a bit more about this topic today