On the flipside, I just got a request to cancel bids in an ongoing auction. Bidder put several bids in on a fairly cheap card. Nothing very expensive or outrageous. No "I put the decimal point in the wrong spot" reason.
Just, "I'm not interested anymore, please cancel my bids".
Seems polite on the surface, and there's still 6 days left in the auction, and it's really not that big a deal...but...why does it annoy me soooooo much?