A buyer listing is an agreement between a real estate agent and a prospective home or property buyer under which this "Buyer Agent" agrees to assist the Buyer in locating and contracting to purchase real estate, in exchange for a commission. Generally required to be in writing by law and/or professional rules (using a "Buyer Agency Agreement"), a Buyer Listing can also be described as the representative counterweight to the "Seller/Property Listing" arrangement between Listings Agents and Sellers. A Buyer Listing arrangement may be entered into a buyer listing service ("BLS") in the same way that a Property, Home or Seller Listing is entered into the Multiple (Sellers') Listing Service ("MLS"). Buyer Listing practices have become the predominant form of Agent selling (versus 'listing') act