For real estate agents, if prospecting for expired MLS listings is a priority, there are essentially two services to choose from. The primary advantage of both services to REALTORS is that they enjoy a first-mover advantage over their competition. For real estate agents that choose to use this technology, they get notified about the availability of a lead almost immediately. In addition to leads, these services provide REALTORS with sufficient data regarding the property to allow them to quickly call and close the listing.