Leaving a listing up after it is sold. Why?

Is there some sort of advantage to leaving a listing up after it is sold? I suspect someone of doing that. That seems dishonest, wasting others time, and possibly trying to lowball others

Kathleen -

Owners should deactivate their listing once their week is rented or sold. Unfortunately there are some owners who fail to do this. If you will contact us at support@redweek.com and give us the posting number that is no longer available, we will follow up with the owner and make sure the posting is removed.

Thanks, Phyllis