I know this might be a noob question, but I wish to find the answer. So, yesterday after finishing up a question with user521180, which he accepted and +2 rep, miraculously, seconds afterward I gain 160 rep. So, I was like, cool, I guess someone voted up my previous answers. Then around 12 pm ET the 160 miracle reputation points got reverted. So, what exactly happened? Did this user521180 got overexcited because of the help I gave him and went "up vote" rampage on all my previous answers or was it a bug? How exactly does it work on Stack Overflow for tracking stuff like this?
I do not know if it has anything to do with user521180 or not. All is assumption.