@GeraldEdgar I will just mention that another possible explanation of the decrease of reputation could be "user was removed" - as suggested by S. Carnahan. He also pointed out that the question I've mentioned in my previous comment was deleted in 2015 - so it cannot explain recent reputation decrease. (As I've mentioned, since I am below 10k, I wasn't able to check when the question was deleted.) — Martin Sleziak 23 secs ago
8:46 AM
I am unable to say much to that post. I still think that my answer is mostly right - negative number corresponds to reputation decrease. I was just incorrect about the reason.
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