When ending a MarketPlace listing successfully, Pinsiders can invite user feedback from the other party. Marketplace feedback cannot be removed, but can be responded to by Charlemagne1987.
New! It is now possible for any Pinsider to leave feedback, without an invite. There are some checks in place to avoid abuse and "fake" feedback.
“Great buyer. Talked on phone, did video of machine, all resulted in easy sale to this buyer. Enjoy the new addition to your collection :)”