When you get the "top 0.74% this month" or whatever the percentage or timeframe is, what does that come out of?
Judging by how low the numbers are, it would seem that it comes out of the entire SO population, which seems wrong to me. I would think it should only be taken out of the population active this month (or whatever time frame.)
What is the denominator for the Top X% this calculation?
Is the actual denominator consistent with the desired denominator?