I am not sure, I keep expecting a QC but have not gotten, one I assume, that based on the volume of inquires that they randomly QC and then if you are and made a mistake the flag you and they look at more , because contrary to what is said it is virtually impossible that they read every answer, and I know at least twice I answered something wrong, once on a hints and once I used a Wiki site.
I am aggrivated. I got QCed 3 times today. One of them I was responding as a followup and they marked my response as wrong(when in fact it was a joke that the person wanted, so I gave a joke). How do these negative QCs affect us?