This is an interesting topic. First off, I do read feedback from other buyers when I am making a purchase, and more closely, if they have a rating other than 100%. However, a few weeks ago I found this really popular Etsy seller, and her items were very high priced for what they were and still selling like hotcakes, in the shops policies and other places were the seller stressing how negative feedback is not an option to leave... and whatnot. I mean it was stressed a LOT. Then, I got to reading the feeback she left to others, and WOW 99% of it was NEGATIVE, and really long drawn out snide remarks to the sellers who were unhappy.
I couldn't believe it, and assumed no one else ever bothered to look at the feedback she had left for others after all of talking and warning she did about not leaving her anything less than perfect feedback. I was disgusted and just laughed about how terrible of a person this person led herself to be through that feedback. too funny.