The ability to leave a positive feedback while also leaving low DSRs allows eBayers to sabotage one another. And it absolutely DOES happen from time to time. It hasn't happened to me but I have a friend to whom it did happen. My friend and another eBayer frequently sell the same kind of coins on
ebay. This other eBayer bid and won some of my friends coins, gave him a positive feedback and then gave him all 1s in his DSRs! My friend is pretty savvy and was able to figure all this out - there absolutely IS a way to figure out who gave you lousy DSRs - and put this other eBayer on his DO NOT SELL list. And, fortunately for him, he's such a good, long-time seller that he was able to withstand the low DSRs and not lose his Top Rated Seller badge.