If your MLS~ Multiple Listing Service is doing their job, you should have listings everywhere they feed into.
You can control your listings and outcomes with how you market your listing. There are many ways to get your listings extra marketability online and sometimes its cheap or free. Creating videos, posting to youtube, syndicating your videos (taking your pics and making a 30 sec video) and posting online. Its a top notch technique that can get you a lot of exposure if you are consistent with your efforts. Set up a youtube channel and set up all of your listings and direct your facebook friends and clients every time you list a property.