Whatever the reason, feedback (quantity and quality) seems to be important to buyers. It's a pity that retailers haven't come up with something similar. We've all seen "buyers" in stores that might be less "excessive" if they had a feedback number. If they were rude, the retailer/seller could "leave them a neg".
Since this feedback thing seems to work so well on ebay, wouldn't it be nice if we were all given a feedback score that would be clearly visible to others? Disregarding any "Constitutional rights", it might cut down on some of the horn-honking and hand jesters. (just a thought)
I just realized something - ebay only provides the percentage for sellers; not buyers.