Yahoo and Zillow are combining forces to make Zillow the exclusive sales partner to existing home sales advertisers on Yahoo. This partnership will form the largest real estate ad network for existing home advertisers. According to ClickZ,  Zillow which currently offers enhanced listings and profile pages for agents, will also be included on Yahoo Real Estate placements. Zillow’s for-sale listings, showcase ads, and featured listings will also be fed to Yahoo’s site. Yahoo Real Estate and Zillow currently rank second and third among top real estate sites, Realtor.com tops the rankings.

The two companies have worked together since 2006, and partnered separately with a large percentage of the same newspaper site publishers.. Bringing their resources together to become one bigger better force will logically be a positive move.