I have been using Home Value Leads from Facebook for over a year now. It is by far the best advertising I have ever used to generate Seller Listings. I use others such as Realtor.com and Zillow with some success for Buyers, but they do not generate Listings. I also pay extra $99 per month for them to manage my account and the service is excellent. I Highly Recommend this service, It is well worth the money.
-- Gary M