8

In taking a closer look, nothing nefarious is going on. Since it's impossible to know someone's motivations for voting, I am going to err on the conservative side and assume that people are rewarding good posts only on their merit. However, with badges in play, there is always a chance that people will "hunt" them. Good content should always be ...


3

It looks that the threshold is 10 votes, as jonsca mentioned in a comment to the question.


1

Looking at only the numbers of 'New Users in week' after the change they seem much more variable than SO but average out to be slightly declining, with a slight recent upward trend:


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