You can quickly link your listings to Facebook. Once in your account, go to your e-tour.
Once you click on the e-tour, you can see the Facebook share button on the right. Click on that button.
You will be redirected to Facebook in a new window. Login if you need to.
Once logged in, choose where you want to post this listing to. If you have a business page, you can select it at the top.
Choose a thumbnail if it allows, and then click on share.