Shop scoring by companies

   The issue of shop scoring is a mystery to many shoppers (this one included). The consensus is that many companies grade you in some way. Some do not tell you your score or provide feedback. Others give feedback within a couple of days or even hours of the shop being submitted. Scores are generally based on the timeliness of the report, the clarity of the report, whether the specific shop instructions were followed, and grammar within the report. I always enjoy getting quick feedback letting me know what I did well and any constructive feedback if necessary. Some companies specify that a shopper must keep a feedback of  "x" to continue to request shops or "x" to self-assign. Other companies never mention feedback. Do you enjoy getting feedback or think that some scores or arbitrary?