Negative feedback represents the failure of the transaction in one form or another. I guess I feel like the DSRs should represent successful transactions and that negative feedback speaks for itself as a percent of failed transactions.

While the negative could be left for reasons the DSRs cover, I think the negative speaks for itself with enough weight.

Aside from that, I think there’s probably a fair amount of negative feedback that comes with one star across the board, especially if the person is angry. Perhaps this explains one reason why people with free shipping still end up with a reduced shipping cost DSR.