When you download and install “Favorite Addon” new section will add to Addons tab of Listdom -> Settings and you can configure this addon.
Status: You can disable or enable status field
Access: With this feature you can say Guest users can add a listing as favorite or just logged in users should have this ability
Shortcode: There are two shortcodes, listdom-favorites-count with this shortcode you can show number of favorites that current user has. listdom-favorites id=”SHORTCODE_ID” which show list of favorites, this shortcode has id parameter which you can define in which style this page should show favorite listings.
Also you can see demo of this addon here.