Listing agents want viewing feedback for two reasons. They want to know if you are interested in the house and they want you to provide the negative feedback they already know, but have not conveyed to their seller client. Conveying your interest in a home to a listing agent before you make an offer can only hurt you financially. Your thinking, how? If you convey interest in a home to the listing agent, they will exaggerate that interest and convey it to every agent that recently showed the property. This tactic is designed to generate a sense of urgency and demand that may or may not be there. If another party is interested in the property you can be sure the listing agent will call your agent and let them know. Neutralizing an unethical listing agent requires skillful strategies, knowledge of the market, and always keeping your client's best interest at heart.