One of the most important aspects of the Feedback system is its ability to help members make safe trading decisions. In order to maintain a credible system, each user may only affect another member's Feedback score by +1, 0, or -1 once a week. This rule helps keep the feedback system fair. It prevents two people from working together to dramatically increase their feedback scores, giving the appearance that their trading history is stronger than it actually is.
We are often asked why all Feedback left by one user for another isn't counted toward the member's Feedback Score. If we counted all the Feedback left by one user it would be very easy for two people working together to dramatically increase their Feedback Scores, giving the appearance that their trading history was stronger than it actually was.