Its been referred to casually as “three nerding” but I believe its officially referred to as utilizing the “Taking Offers” form for “Property Removal”. I consulted the wiki on the Storage Policy and the Property Removal pages in planning this but also was given the go ahead and advice from the Board about the forms, and they used the term “auctioning” in reference to them so I went with that term. Sorry for the confusion!
(Edit to add for anyone wondering: Every item up for auction will have a “Taking Offers” form attached so people can make offers and the best offer by the closing of the auctions on May 3rd will determine the winner, if its not removed from auction by a Lead beforehand.)