An open listing arrangement is a situation whereby you have gained the services of a number of different agents who will list your property and attempt to find a buyer for you.
You are only expected to pay a commission to the successful agent when a buyer has been found.
The benefit of this type of listing is that your property may be advertised across a wider spectrum of potential buyers, but the downside is that you may not receive the same individual attention as you would by employing the services of only one agent.