You can't judge feedback solely on negative feedback. I have some negatives and they have all come from the cheapest items I have sold, from bidders that expect much more than the description stated; or retaliation for a negative left to a seller by myself. If a seller(me) says specifically chrome is majorly pitted and will need serious rechroming work and the winning bidder expects it to polish up, there is not much the seller can do but offer a refund. But I refuse to pay return shipping on an item like that which results in a negative on a $5-$10 part. Also, if I am the buyer and a seller majorly misrepresents an item, then will not respond to contacts to make things right, I will leave a negative. This usually results in a negative from the seller as retalation since he/she thinks its OK to screw people. Feedback should definitely not be private, but it should be taken with a grain of salt at times.
Jason