As regards real estate, millions of searches are done each day on mulitple search engines for search queries like "Atlanta real estate", or "atlanta ga real estate". The search engine returns results for real estate related sites and content for the Atlanta, GA area in this case. The sites are ranked by highly secret and complex formulas. These formulas are also changed frequently by the engines.
Though there are many who attempt to manipulate their sites to get higher placement in results, it's generally best to provide highly relevant real estate and area content and make it very useful for your site visitors. As all the engines are striving to be the most popular based on results that are closest to what the searcher is looking for, it can only be a good strategy to provide that relevant content.