Common business courtesy? The only feedback requests I receive are on product registration cards (that are really just a method of harvesting my personal data) or unsolicited telephone opinion surveys when I'm eating dinner. Feedback I send to companies by e-mail is routinely ignored, or worse, they insult me with a canned response. The author's supposition that this is a courtesy is garbage. The few companies who want feedback just want to get into my pants and coddle the family jewels.