I've had this happen a few times. Something goes wrong in an online transaction, and you leave feedback that reflects the situation. The seller then contacts you and asks that, in exchange for partial refund or additional product, you change your feedback to 'positive'. I've had this happen a few times on both eBay and Amazon. For example, last week I ordered a cheap double-edged razor from Amazon to keep as a spare. (http://ecx.images-amazon.com/images/I/71+owDb9PBL._SL1200_.jpg) It arrived promptly, but its packaging had already been opened. It was obvious that someone had opened it, looked at the razor, and put it back in the package and returned it. There was nothing wrong with the razor, so I kept it, and left accurate feedback. 5 stars for everything except "Item as described" which I gave 3, and I explained in the comments: ""Razor arrived on time but the packaging had been opened already. It looked fine and nothing was missing so I kept it, but still irritating to get something that has already been ripped open."" The seller then contacted me offering some sample blades in exchange for me changing it to positive feedback, stating that it was probably Amazon that opened the razor (ha!). I'm strongly inclined to leave it as-is, it's accurate and a few 10 cent blades aren't enough to change that. What would Macrumors do?